Platt, Rutherford H., author
Island Press, 2014
Buku Teks
Cranston, Ross, author
Oxford University Press, 1987
Buku Teks
Glicksman, Robert L., author
West Publishing Co., 1995
Buku Teks
Harte, J.D.C.
E & F.N. Spon , 1985
Buku Teks
Curtin, Daniel J.
Solano Press Books, 1993
Buku Teks