Pergamon Press, 1985
Buku Teks
Gregory, Richard P. F., author
John Wiley & Sons, 1977
Buku Teks
Ackley, Meredith E., author
Appleton-Sentury Crofts, 1965
Buku Teks
Clayton, Roderick K., author
Cambridge University Press, 1980
Buku Teks
Clayton, Roderick K., author
Blaisdell, 1965
Buku Teks