Halgin, Richard P., author
Harcourt Brace Jovanovich College, 1993
Buku Teks
Powell, Douglas H.
Little, Brown & Co., 1983
Buku Teks
Cacioppo, John T., author
Cengage Learning, 2013
Buku Teks
Barlow, David H., author
Connecticut Cengage Learning, 2015
Buku Teks
Oltmanns, Thomas F., author
Pearson, 2015
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