edited by James W. Wilkie, Michael C. Meyer and Edna Monzon de Wilkie
University of California Press, 1976
Buku Teks
Chan Stephen; Moore Cerwyn
Sage, 2006
Buku Teks
Buss, Claude Albert, author
Mamillan, 1955
Buku Teks
Griffith, Ernest S.
New York University press, 1956
Buku Teks
Griffith, Ernest S.
New York University press, 1952
Buku Teks