Kotz, John C.
Thomson, Brooks/Cole, 2006
Buku Teks SO
Kotz, John C.
Saunders College, 1991
Buku Teks SO
Hess, Fred C.
Made Simple Books, 1986
Buku Teks SO
Kotz, John C.
Brooks/Cole Cengage Learning, 2012
Buku Teks SO
Denbigh, Kenneth
Cambridge University Press, 1961
Buku Teks SO