edited with an introduction by Robert A. Nisbet
Harper Torchbooks, 1972
Buku Teks
Martin, Brian, author
Freedom Press, 1993
Buku Teks
edited by Gerald Zaltman, Philip Kotler, Ira Kaufman
Holt, Rinehart and Winston, 1972
Buku Teks
edited by S.N. Eisenstadt
Little, Brown and Company, 1968
Buku Teks
McRobert, Kenneth
McClelland and stewart, 1976
Buku Teks