Donald N. Levine (1988), The Flight from Ambiguity: Essays in Social and Cultural Theory. p. 218; Partly cited in: David L. Sills, Robert King Merton (2000), Social Science Quotations: Who Said What, When, and Where. p. 129-130
Donald N. Levine Quotes
Donald N. Levine (2014), Greater Ethiopia: The Evolution of a Multiethnic Society. p. 1