Schwartz, Barry
W.W. Norton, 1991
Buku Teks SO
Schwartz, Barry
W.W. Norton, 1991
Buku Teks SO
Lutz, John
Waveland Press, 2005
Buku Teks SO
edited by Daniel Reisberg and Paula Hertel
Oxford University Press, 2004
Buku Teks SO
Lieberman, David A.
Thomson Wadsworth, 2004
Buku Teks SO