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Thomson Wadsworth, 2007
Buku Teks
Little, Brown , 1970
Buku Teks
Christian Soe
McGraw-Hill, 2004
Buku Teks
Barringron, Lowell, author
Wadsworth and Cengage Learning, 2013
Buku Teks
Sodaro, Michael J.
McGraw-Hill, Higher Education, 2008
Buku Teks