Harriet Zuckerman, Scientific Elite: Nobel Laureates in the United States New York, The Free Press, 1977, p. 68: Protestants turn up among the American-reared laureates in slightly greater proportion to their numbers in the general population. Thus 72 percent of the seventy-one laureates but about two-thirds of the American population were reared in one or another Protestant denomination-)
Jay Diamond, Larry. Plattner, Marc F. and Costopoulos, Philip J. World Religions and Democracy. 2005, p. 119. link (saying "Not only do Protestants presently constitute 13 percent of the world's population—about 800 million people—but since 1900 Protestantism has spread rapidly in Africa, Asia, and Latin America.")
Shurden, Walter (2001). «Turning Points in Baptist History». Macon, GA: The Center for Baptist Studies, Mercer University. Consultado em 16 de janeiro de 2010
Kim, Sung Ho (2008). «Max Weber». The Stanford Encyclopedia of Philosophy. Metaphysics Research Lab, CSLI, Stanford University. Consultado em 21 de agosto de 2011
