Wolff, Jonathan
W.W. Norton & Co., 2012
Buku Teks
Forsythe, David P., 1941-
Cambridge University Press, 2000
Buku Teks
edited by Brian Galligan and Charles Samford
Federation Press, 1977
Buku Teks
edited by Brian Galligan and Charles Samford
Federation Press, 1997
Buku Teks
Friedman, Mark
Capstone Global Library, 2012
Buku Teks