Adams, John, 1938-
St. Martin's Press, 1985
Buku Teks
Balaam, David N., 1950-
Pearson/Prentice Hall, 2005
Buku Teks
Balaam, David N., 1950-
Prentice-Hall, 1996
Buku Teks
edited by W. Ladd Hollist
Westview Press, 1985
Buku Teks
Balaam, David N., 1950-
Pearson Education, 2014
Buku Teks