edited by David G. Mandelbaum, Gabriel W. Lasker, Ethel M. Albert
University of California Press, 1967
Buku Teks SO
edited by David G. Mandelbaum, Gabriel W. Lasker, Ethel M. Albert
University of California Press, 1963
Buku Teks SO
Swift, M. G.
Universiti Kebangsaan Malaysia, 2001
Buku Teks SO
Arons, Arnold B.
John Wiley & Sons, 1990
Buku Teks SO
Routledge, 1996
Buku Teks SO