Kotz, John C., author
Saunders College Publishing, 1987
Buku Teks
Kotz, John C., author
Thomson, Brooks/Cole, 2006
Buku Teks
Kotz, John C., author
Saunders College, 1991
Buku Teks
Kotz, John C., author
Brooks/Cole Cengage Learning, 2012
Buku Teks
Hess, Fred C.
Made Simple Books, 1986
Buku Teks