Ehrlich, Paul R.
Macmillan, 1987
Buku Teks
Forman, Richard T. T.
Cambridge University Press, 2014
Buku Teks
Henry W. Art, general editor ; foreword by F. Herbert Bormann ; contributing editors, Daniel Botkin [and others]
Henry Holt, 1993
Buku Referensi
Colinvaux, Paul A.
John Wiley & Sons, 1973
Buku Teks
Kormondy, Edward J.
Prentice-Hall, 1976
Buku Teks