Zaltman, Gerald
John Wiley & Sons, 1977
Buku Teks
Smith, Anthony D.
Longman, 1976
Buku Teks
Smith, Anthony D.
Longman, 1976
Buku Teks
Moore, Wilbert E. (Wilbert Ellis)
Prentice-Hall, 1963
Buku Teks
edited by Robert A. Nisbet
Blackwell, 1972
Buku Teks