Coombes, Davies, M., 1956-
E. & F.N. Spon , 1989
Buku Teks
Stroh, David Peter, 1950-, author
Chelsea Green Publishing, 2015
Buku Teks
Trauner, Theodore J., author
John Wiley & Sons. Inc., 1993
Buku Teks
Douglas Davies
Guilford Press, 1999
Buku Teks
Riordan, Jan, author
Mosby, 1983
Buku Teks