edited by George Dalton
New York, 1971
Buku Teks SO
Ponsioen, J.A.
Mouton, 1969
Buku Teks SO
Harman, Willis
Berrett-Koehler , 1998
Buku Teks SO
Moore, Wilbert Ellis
Prentice-Hall, 1963
Buku Teks SO
edited with an introduction by Robert A. Nisbet
Harper Torchbooks, 1972
Buku Teks SO