Aldo Leopold (2013). “Aldo Leopold: A Sand County Almanac & Other Writings on Conservation and Ecology: (Library of America #238)”, p.556, Library of America
"Listen Up, Gals: Duets' Robin Thicke Sets the Standard for What You Want in a Guy. Paula Patton Is a Lucky Lady!" by Jessica Radloff, www.glamour.com. June 28, 2012.