diff --git a/lib/index.coffee b/lib/index.coffee
index 5ae5607..b7dc248 100644
--- a/lib/index.coffee
+++ b/lib/index.coffee
@@ -1,3 +1,4 @@
+_ = require 'lodash'
 fm = require 'front-matter'
 marked = require 'marked'
 yaml = require 'js-yaml'
@@ -246,6 +247,7 @@ module.exports = (dirtyMarkdown, options = {}) ->
       url: value.href
       title: value.title or null
     )
+  links = _.sortBy(links, ['name', 'url'])
 
   html = marked.parser(ast)
 
diff --git a/test/expected/marked-readme.md b/test/expected/marked-readme.md
index 75983cd..766834e 100644
--- a/test/expected/marked-readme.md
+++ b/test/expected/marked-readme.md
@@ -336,10 +336,10 @@ Copyright (c) 2011-2014, Christopher Jeffrey. (MIT License)
 
 See LICENSE for more info.
 
+[badge]: http://badge.fury.io/js/marked
+[breaks]: https://help.github.com/articles/github-flavored-markdown#newlines
 [gfm]: https://help.github.com/articles/github-flavored-markdown
 [gfmf]: http://github.github.com/github-flavored-markdown/
-[pygmentize]: https://github.com/rvagg/node-pygmentize-bundled
 [highlight]: https://github.com/isagalaev/highlight.js
-[badge]: http://badge.fury.io/js/marked
+[pygmentize]: https://github.com/rvagg/node-pygmentize-bundled
 [tables]: https://github.com/adam-p/markdown-here/wiki/Markdown-Cheatsheet#wiki-tables
-[breaks]: https://help.github.com/articles/github-flavored-markdown#newlines
diff --git a/test/index.coffee b/test/index.coffee
index 5a63c1e..cf9cead 100644
--- a/test/index.coffee
+++ b/test/index.coffee
@@ -467,6 +467,65 @@ describe 'inline grammar', ->
       '<https://github.com/slang800/tidy-markdown>'
     )
 
+  it 'should handle reference links', ->
+    tidyMdSnippet('''
+      [NPM version][npm-url]
+
+      [npm-url]: https://npmjs.org/package/npms-analyzer
+    ''').should.equal('''
+      [NPM version][npm-url]
+
+      [npm-url]: https://npmjs.org/package/npms-analyzer
+    ''')
+
+  it 'should handle shorthand reference links', ->
+    tidyMdSnippet('''
+      [npm-url]
+
+      [npm-url]: https://npmjs.org/package/npms-analyzer
+    ''').should.equal('''
+      [npm-url]
+
+      [npm-url]: https://npmjs.org/package/npms-analyzer
+    ''')
+
+  it 'should convert links to shorthand reference style', ->
+    tidyMdSnippet('''
+      [npm-url](https://npmjs.org/package/npms-analyzer)
+
+      [npm-url]: https://npmjs.org/package/npms-analyzer
+    ''').should.equal('''
+      [npm-url]
+
+      [npm-url]: https://npmjs.org/package/npms-analyzer
+    ''')
+
+  it 'should convert links to shorthand reference style', ->
+    tidyMdSnippet('''
+      [npm-url](https://npmjs.org/package/npms-analyzer)
+
+      [npm-url]: https://npmjs.org/package/npms-analyzer
+    ''').should.equal('''
+      [npm-url]
+
+      [npm-url]: https://npmjs.org/package/npms-analyzer
+    ''')
+
+  it 'should sort reference style links', ->
+    tidyMdSnippet('''
+      Visit [npm] or maybe [David DM][david-dm] or even [Travis]
+
+      [npm]: https://npmjs.org/package/npms-analyzer
+      [david-dm]: https://david-dm.org/npms-io/npms-analyzer
+      [travis]: https://travis-ci.org/npms-io/npms-analyzer
+    ''').should.equal('''
+      Visit [npm] or maybe [David DM][david-dm] or even [Travis]
+
+      [david-dm]: https://david-dm.org/npms-io/npms-analyzer
+      [npm]: https://npmjs.org/package/npms-analyzer
+      [travis]: https://travis-ci.org/npms-io/npms-analyzer
+    ''')
+
   it 'should handle images', ->
     tidyMdSnippet('![text](image.jpg)').should.equal('![text](image.jpg)')
     tidyMdSnippet('![text]( image.jpg )').should.equal('![text](image.jpg)')