Hufford, Terry L., author
Harper & Row, 1978
Buku Teks
Jones, Kenneth G.
John Wiley & Sons, 1977
Buku Teks
by T. Elliot Weier ... [et al.]
John Wiley & Sons, 1982
Buku Teks
Long, Robert W., author
W.B. Saunders, 1976
Buku Teks
Galston, Arthur W., author
Prentice-Hall, 1968
Buku Teks