twbs/bootstrap — pull request #11408 by apexskier (2013-11-07 21:02:55+00:00)
Title: Added cite inside blockquote styles.

This enables the use of cite inside of blockquote instead of small.

With the updated HTML5 spec, this is the proper way to do what bootstrap's examples of the small tag inside the blockquote tag is accomplishing.

http://www.w3.org/html/wg/drafts/html/master/grouping-content.html#the-blockquote-element
http://www.w3.org/html/wg/drafts/html/master/text-level-semantics.html#the-cite-element

"Content inside a blockquote other than citations and in-line changes must be quoted from another source, whose address, if it has one, may be cited in the cite attribute."

http://html5doctor.com/cite-and-blockquote-reloaded/