Schenkman Publishing, 1972
Buku Teks
Gregory, Robert J., author
Pearson/Allyn and Bacon, 2007
Buku Teks
Groth-Marnat, Gary, author
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Buku Teks
Groth-Marnat, Gary, author
John Wiley &Sons, Inc, 2004
Buku Teks
Kaplan, Robert M., author
Cengage Learning, 2018
Buku Teks