APA Style Citation
Keith O'Brien. (n.d.). BrainyQuote.com. Retrieved June 18, 2013, from BrainyQuote.com Web site: http://www.brainyquote.com/quotes/authors/k/keith_obrien.html
Chicago Style Citation
Keith O'Brien. BrainyQuote.com, Xplore Inc, 2013. http://www.brainyquote.com/quotes/authors/k/keith_obrien.html, accessed June 18, 2013.
MLA Style Citation
"Keith O'Brien." BrainyQuote.com. Xplore Inc, 2013. 18 June 2013. http://www.brainyquote.com/quotes/authors/k/keith_obrien.html
