Greenberg, Florence Bonzer
The Bobbs-Merrill, 1967
Buku Teks
Steven, Laurence
Prentice-Hall, 1999
Buku Teks
Crusius, Timothy W.
McGraw-Hill, 2002
Buku Teks
Schorer, Mark
Harcourt, Brace Jovanovich, 1972
Buku Teks
edited Arthur M. Eastman ... [and others]
W.W. Norton , 1965
Buku Teks