Bagozzi, Richard P.
Open University Press, 2003
Buku Teks
Engel, James F.
Binarupa Aksara, 1994
Buku Teks
Howard, John A.
Prentice-Hall, 1989
Buku Teks
Lawrence Erbaum associates, publisher, 2005
Buku Teks
edited by Lina M. Gomez, Lucely Vargas-Preciado, David Crowther
Emerald, 2017
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