Erma Bombeck (2013). “The Erma Bombeck Collection: If Life Is a Bowl of Cherries, What Am I Doing in the Pits?, Motherhood, and The Grass Is Always Greener Over the Septic Tank”, p.119, Open Road Media
"'I Can't Be Sure God Does Not Exist': World's Most Notorious Atheist Richard Dawkins Admits He Is in Fact Agnostic". www.dailymail.co.uk. February 24, 2012.
Ursula K. Le Guin (2016). “Worlds of Exile and Illusion: Three Complete Novels of the Hainish Series in One Volume--Rocannon's World; Planet of Exile; City of Illusions”, p.431, Macmillan
Thorstein Veblen (2016). “BUSINESS & ECONOMICS Premium Collection: 25+ Titles in One Volume: The Theory of Business Enterprise, The Higher Learning in America, The Vested Interests and the Common Man, On the Nature of Capital…: The Theory of the Leisure Class, The Beginning of Ownership, The Preconceptions of Economic Science, The Industrial System and the Captains of Industry, The Socialist Economics of Karl Marx…”, p.69, e-artnow
Thorstein Veblen (2016). “THE THEORY OF THE LEISURE CLASS: An Economic Study of American Institutions and a Social Critique of Conspicuous Consumption: Development of Institutions That Shape Society and Influence the Livelihood of Citizens: Based on Sociological & Economical Theories of Charles Darwin, Karl Marx, Adam Smith and Herbert Spencer”, p.68, e-artnow