Gravetter, Frederick J., author
Wadsworth/Thomson Learning, 2004
Buku Teks
Gravetter, Frederick J., author
Thomson Wadsworth, 2007
Buku Teks
Kaplan, Robert M., author
Allyn and Bacon , 1987
Buku Teks
Siegel, Sidney, author
McGraw-Hill, 1956
Buku Teks
Adkins, Dorothy C., author
Charles E. Merrill Books , 1964
Buku Teks