CDN

// CDNJS

http://cdnjs.com/

// BOOTSTRAP (http://www.bootstrapcdn.com/)


<!-- **************  BOOTSTRAP **********************  -->
<link href="http://netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css" rel="stylesheet">
<script type="text/javascript" src="http://netdna.bootstrapcdn.com/bootstrap/3.1.1/js/bootstrap.min.js"></script>

<!-- **************  JQUERYUI  **********************  -->
 <link rel="stylesheet" href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.10.4/themes/smoothness/jquery-ui.css">
<script src="http://ajax.googleapis.com/ajax/libs/jqueryui/1.10.4/jquery-ui.min.js"></script>

<!-- **************  JQUERY  **********************  -->
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.0/jquery.min.js"></script>
 <script type="text/javascript">// <![CDATA[
       !window.jQuery && document.write('<script src="lib_local/jquery210.js"><\/script>')
// ]]></script>
<script src="http://ajax.aspnetcdn.com/ajax/jquery.validate/1.9/jquery.validate.js"></script>

<!-- ************ JQUERY VALIDATE ****************** -->
 <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery-validate/1.14.0/jquery.validate.min.js"></script>

<!-- **************  ZEPTO  **********************  -->
 <script src="http://zeptojs.com/zepto.min.js"></script>


Más información en:
https://developers.google.com/speed/libraries/devguide#jquery-ui