Bierstedt, Robert, 1913-1998. The social order. - 4th ed. - New York, McGraw-Hill [1974] - xi, 579 p. 24 cm. ISBN: 0070052530 LCCN: 73011405 LC Class. No.: HM51 .B47 1974 / .B47 1974 Dewey Class. No.: 301