Beer, Samuel H., author
Alfred A. Knopf, 1966
Buku Teks
Madgwick, P.J., author
Stanley Thornes, 1992
Buku Teks
Punnett, R.M., author
Dartmouth, 1994
Buku Teks
Mayer, Ann Elizabeth, author
Westview Press, 1995
Buku Teks
Maitland-Jones, J.F., author
W.W. Norton, 1974
Buku Teks