Kotz, John C.
Saunders College, 1991
Buku Teks
Kotz, John C.
Saunders College Pub, 1987
Buku Teks
Kotz, John C.
Brooks/Cole Cengage Learning, 2012
Buku Teks
Kotz, John C.
Saunders College Publishing, 1987
Buku Teks
Klumpp, Gerhard W.
John Wiley & Sons, 1982
Buku Teks