Irvin S. Cobb, Mary Roberts Rinehart, Helen Rowland, Richard Saunders (2017). “We Should All Be So Feminine: We Should All Be a Feminist: We Should All Be Feminists”, p.64, Lulu.com
Charles Alexander Eastman, Michael Oren Fitzgerald (2007). “The Essential Charles Eastman (Ohiyesa): Light on the Indian World”, p.14, World Wisdom, Inc
"The Superinvestors of Graham-and-Doddsville". Essay by Warren Buffett published in Hermes, the Columbia Business School Magazine (1984), later quoted in "31 years ago, Warren Buffett revealed the secret to investing and correctly predicted nobody would listen" by Myles Udland, www.businessinsider.com. August 24, 2015.