The National Association of Biology Teachers, 1970
Buku Teks
Keeton, William T., author
W.W. Norton, 1967
Buku Teks
Freeman, Scott, author
Prentice-Hall, 2002
Buku Teks
edited by John Brady
Cambridge University Press, 1982
Buku Teks
Clark, Mary E., author
W.B. Saunders, 1973
Buku Teks