Willer, David
Standford University Press, 2007
Buku Teks
Robinson, Paul W.
Harper & Row , 1979
Buku Teks
Frisby, David
Routledge, 1992
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