Dunham, Arthur
Thomas Y Crowell, 1962
Buku Teks
Ross, Murray G.
Harper & Row, 1955
Buku Teks SO
edited by Mayer N. Zald
Quadrangle Books, 1967
Buku Teks
edited by Ralph M. Kramer, Harry Specht
Prentice-Hall, 1983
Buku Teks SO
selected and edited by Ermest B. Harper and Arthur Dunham
Association Press, 1966
Buku Teks