Southwick, Charles H., author
D. Van Nostrand, 1976
Buku Teks
Southwick, Charles H., author
D. Van Nostrand, 1972
Buku Teks
Brewer, Richard, author
Saunders College Publishing, 1994
Buku Teks
Ehrlich, Paul R., author
Macmillan, 1987
Buku Teks
Colinvaux, Paul A., author
John Wiley & Sons, 1973
Buku Teks