Kotz, John C., author
Thomson, Brooks/Cole, 2006
Buku Teks
Kotz, John C., author
Saunders College, 1991
Buku Teks
Snyder, Milton K.
Holt Rinehart & Winston, [date of publication not identified]
Buku Teks
Denbigh, Kenneth, author
Cambridge University Press, 1961
Buku Teks
Pimentel, George C., author
Holden-Day, 1971
Buku Teks