Bill, James A., author
Littel Brown and Company, 1984
Buku Teks
Goldschmidt, Arthur, author
Westview Press, 1983
Buku Teks
Sloan, A
Hutchinson , 1924
Buku Teks
Halliday, Fred, author
Cambridge University Press, 2005
Buku Teks
edited by Sydney Nettleton Fisher
Cornell University Press , 1955
Buku Teks