Krohne, David T., author
Brook/Cole, 2001
Buku Teks
Odum, Eugene P. (Eugene Pleasants), author
Brooks/Cole Cengage Learning, 2005
Buku Teks
Odum, Eugene P. (Eugene Pleasants), author
Saunders College, 1983
Buku Teks
Cox, George W., author
Wm. C. Brown, 1996
Buku Teks
Smeins, Fred E., author
Drive Kendall/Hunt, 1978
Buku Teks