Weiss, John, author
Prentice-Hall, 1995
Buku Teks
Mason, Edward S., author
Fordham University Press, 1958
Buku Teks
Sachs, Jeffrey D., author
Penguin Books, 2005
Buku Teks
editor, Williard A. Beling, George O. Totten
Rajawali , 1985
Buku Teks
Rajawali, 1980
Buku Teks