APA Style Citation
Clifford D. Simak. (n.d.). BrainyQuote.com. Retrieved May 25, 2013, from BrainyQuote.com Web site: http://www.brainyquote.com/quotes/quotes/c/cliffordd319988.html
Chicago Style Citation
Clifford D. Simak. BrainyQuote.com, Xplore Inc, 2013. http://www.brainyquote.com/quotes/quotes/c/cliffordd319988.html, accessed May 25, 2013.
MLA Style Citation
"Clifford D. Simak." BrainyQuote.com. Xplore Inc, 2013. 25 May 2013. http://www.brainyquote.com/quotes/quotes/c/cliffordd319988.html
