Keeton, William T.
Biological science
W.W. Norton, 1967
 Buku Teks
Freeman, Scott
Biological science
Prentice-Hall, 2002
 Buku Teks
Biological timekeeping
edited by John Brady
Cambridge University Press, 1982
 Buku Teks
Clark, Mary E.
Contemporary biology : concepts and implications
W.B. Saunders, 1973
 Buku Teks
Readings in biological science
edited by Irving William Knobloch
Appleton-Century-Crofts, 1967
 Buku Teks