diff --git a/composer.json b/composer.json
index 9645576..3079052 100644
--- a/composer.json
+++ b/composer.json
@@ -22,6 +22,7 @@
 		"ext-dom": "*",
 		"ext-mbstring": "*",
 		"ext-fileinfo": "*",
-		"league/commonmark": ">=2.3.8"
+		"league/commonmark": ">=2.3.8",
+		"gregwar/rst": "^1.0"
 	}
-}
\ No newline at end of file
+}
diff --git a/constant.php b/constant.php
index d4f6824..7c0c39c 100644
--- a/constant.php
+++ b/constant.php
@@ -2,6 +2,6 @@
 
 const APP_NAME = "ph-Bookshelf";
 
-const VERSION = "0.3.1";
+const VERSION = "0.3.2";
 const CHANNEL = "suk-ws";
 const BRANCH = "master";
diff --git a/src/Element/BookContent/Page.php b/src/Element/BookContent/Page.php
index a900875..d2118e0 100644
--- a/src/Element/BookContent/Page.php
+++ b/src/Element/BookContent/Page.php
@@ -107,8 +107,16 @@ class Page {
 		);
 	}
 	
-	public function getMarkdownContent (): string {
-		return file_get_contents(sprintf("./data/%s/%s.md", PageMeta::$book->getId(), $this->id));
+	public function getContentFilename (string $type): string {
+		return sprintf("./data/%s/%s.%s", PageMeta::$book->getId(), $this->id, $type);
+	}
+	
+	public function hasContent (string $type): string {
+		return file_exists($this->getContentFilename($type));
+	}
+	
+	public function getContent (string $type): string {
+		return file_get_contents($this->getContentFilename($type));
 	}
 	
 }
diff --git a/src/Utils/Markdown/Parser.php b/src/Utils/Markdown/Markdown.php
similarity index 76%
rename from src/Utils/Markdown/Parser.php
rename to src/Utils/Markdown/Markdown.php
index 9e9361a..98981dd 100644
--- a/src/Utils/Markdown/Parser.php
+++ b/src/Utils/Markdown/Markdown.php
@@ -13,10 +13,19 @@ use League\CommonMark\Extension\Strikethrough\StrikethroughExtension;
 use League\CommonMark\Extension\Table\TableExtension;
 use League\CommonMark\Extension\TaskList\TaskListExtension;
 use League\CommonMark\MarkdownConverter;
+use SukWs\Bookshelf\Utils\PageContentType;
 
-class Parser {
+class Markdown implements PageContentType {
 	
-	private static ?ConverterInterface $converter = null;
+	private ?ConverterInterface $converter = null;
+	public const type = array("md");
+	
+	/**
+	 * @return string[]
+	 */
+	public function type (): array {
+		return self::type;
+	}
 	
 	public static function getDefaultParser (): ConverterInterface {
 		
@@ -49,14 +58,14 @@ class Parser {
 		
 	}
 	
-	private static function getParser (): ConverterInterface {
-		if (Parser::$converter === null)
-			Parser::$converter = self::getDefaultParser();
-		return Parser::$converter;
+	private function getParser (): ConverterInterface {
+		if ($this->converter === null)
+			$this->converter = self::getDefaultParser();
+		return $this->converter;
 	}
 	
-	public static function parse (string $article): string {
-		return self::getParser()->convert($article);
+	public function parse (string $raw): string {
+		return $this->getParser()->convert($raw);
 	}
 	
 }
\ No newline at end of file
diff --git a/src/Utils/PageContentType.php b/src/Utils/PageContentType.php
new file mode 100644
index 0000000..84d5d7e
--- /dev/null
+++ b/src/Utils/PageContentType.php
@@ -0,0 +1,14 @@
+<?php
+
+namespace SukWs\Bookshelf\Utils;
+
+interface PageContentType {
+	
+	/**
+	 * @return string[]
+	 */
+	public function type (): array;
+	
+	public function parse (string $raw): string;
+	
+}
diff --git a/src/Utils/ReST/ReST.php b/src/Utils/ReST/ReST.php
new file mode 100644
index 0000000..891f7c7
--- /dev/null
+++ b/src/Utils/ReST/ReST.php
@@ -0,0 +1,23 @@
+<?php
+
+namespace SukWs\Bookshelf\Utils\ReST;
+
+use Gregwar\RST\Parser;
+use SukWs\Bookshelf\Utils\PageContentType;
+
+class ReST implements PageContentType {
+	
+	public const type = array("rst", "rest");
+	
+	/**
+	 * @return string[]
+	 */
+	public function type (): array {
+		return self::type;
+	}
+	
+	public function parse (string $raw): string {
+		return (new Parser())->parse($raw);
+	}
+	
+}
diff --git a/template/raw-article.php b/template/raw-article.php
index 0984edc..7cfd870 100644
--- a/template/raw-article.php
+++ b/template/raw-article.php
@@ -1,16 +1,16 @@
 <?php
 
 use SukWs\Bookshelf\Data\PageMeta;
-use SukWs\Bookshelf\Utils\Markdown\Parser;
-
-$pageMarkdownContent = PageMeta::$page->getMarkdownContent();
+use SukWs\Bookshelf\Utils\Markdown\Markdown;
+use SukWs\Bookshelf\Utils\ReST\ReST;
 
 //   if the `compatibility.article.title.oldversion` is enabled
 // that means the title should be auto-generated from book.xml
 // but not written on page.md.
 //   this code will generate a title from book.xml if the start
 // of the page.md is not `# Title` formatting page title.
-if (PageMeta::compatibilityOldTitlePolicy()) {
+if (PageMeta::compatibilityOldTitlePolicy() && PageMeta::$page->hasContent(Markdown::type[0])) {
+	$pageMarkdownContent = PageMeta::$page->getContent(Markdown::type[0]);
 	$length = strlen($pageMarkdownContent);
 	for ($i=0; $i<$length; $i++) {
 		if (empty(trim($pageMarkdownContent[$i]))) {
@@ -24,4 +24,22 @@ if (PageMeta::compatibilityOldTitlePolicy()) {
 	}
 }
 
-echo Parser::parse($pageMarkdownContent);
+$parsers = array(
+	new Markdown(),
+	new ReST()
+);
+
+$htmlContent = null;
+
+foreach ($parsers as $parser) {
+	$ok = false;
+	foreach ($parser->type() as $suffix) {
+		if (PageMeta::$page->hasContent($suffix)) {
+			$htmlContent = $parser->parse(PageMeta::$page->getContent($suffix));
+			$ok = true;
+		}
+	}
+	if ($ok) break;
+}
+
+echo $htmlContent;