Severin, Werner J.
Communications theories
Longman, 1991
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Hall, Calvin Springer, 1909-1985
Theories of personality
John Wiley & Sons, 1998
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Theories of truth
edited by Frederick F. Schmitt
Blackwell, 2005
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Feist, Jess
Theories of personality
McGraw-Hill, 2002
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Feist, Jess
Theories of personality
McGraw-Hill, 2006
 Buku Teks SO