Bailey, Kenneth D., author
The free press, 1994
Buku Teks
Nadel, S.F. (Siegfried Frederick), author
Cohen & West, 1969
Buku Teks
edited by, Jan J. Loubser ...[et al.].
The Free Press, 1976
Buku Teks
edited by, Jan J. Loubser ...[et al.].
The Free Press, 1976
Buku Teks
Graburn, Nelson
Harper & Row, Publishers, 1971
Buku Teks