"Facebook IPO Filing Reveals Its Stunning Size: A Private Jet, $1 Billion In Profits, And More" By Bianca Bosker, www.huffingtonpost.com. February 1, 2012.
"Exclusive Interview: Facebook's Mark Zuckerberg on the Value of Viral Loops". Interview with Adam L. Penenberg, www.fastcompany.com. September 21, 2009.
"Zuckerberg's (extremely) optimistic prediction of how the Internet benefits the poor, in 3 quotes" by Gregory Ferenstein, venturebeat.com. July 9, 2014.