Scheb, John M., author
Wadswortg Cengage Learning, 2014
Buku Teks
Gammage, Allen Z., author
McGraw-Hill, 1974
Buku Teks
Samaha, Joel, author
West Publishing, 1988
Buku Teks
Regoli, Robert M., author
Jones and Bartlett Publishers, 2010
Buku Teks
Davis, Frederick T, author
Cambridge University Press, 2019
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