Hanna, Nessim
Prentice Hall 2001, 2001
Buku Teks
Hokanson, Clifford M.
Interstate Printers, 1984
Buku Teks
edited by Alvin W. Gouldner and S.M. Miller for the Society for the Study of Social Problem
Free Press, 1965
Buku Teks
Arya, Jagdish C.
Prentice-Hall, 1981
Buku Teks
Duttn, Henry P.
McGraw-Hill, 1931
Buku Teks