Milton-Edwards, Beverly, author
Routledge, 2003
Buku Teks
Philip Allan, 1990
Buku Teks
Punnett, R.M., author
Dartmouth, 1994
Buku Teks
Vampa, Davide, author
Palgrave Macmillan, 2016
Buku Teks
edited by Robert O. Freedman
Westview Press, 1984
Buku Teks