Korner, Christian
Springer, 2012
eBooks
Reynolds, C.S.
Cambridge University Press, 1993
Buku Teks
Odum, Eugene Pleasants
Saunders College, 1983
Buku Teks
Brewer, Richard
Saunders College Publishing, 1994
Buku Teks
Ehrlich, Paul R.
Macmillan, 1987
Buku Teks