Regoli, Robert M., author
Jones and Bartlett Publishers, 2010
Buku Teks
Siegel, Larry J., 1959-, author
Wardsworth, 2011
Buku Teks
Siegel, Larry J., 1959-, author
Wadsworth and Cengage Learning, 2013
Buku Teks
Samaha, Joel, author
West Publishing, 1988
Buku Teks
Davis, Frederick T, author
Cambridge University Press, 2019
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