Monappa, Arun
Tata McGraw-Hill, 1985
Buku Teks
Yoder, Dale
Prentice-Hall, 1962
Buku Teks
Moore, Wilbert Ellis
Macmillan, 1955
Buku Teks
Johnson, Rossall James, 1917-
[publisher not identified], [date of publication not identified]
Buku Teks
Dunlop, John T.
Holt, 1958
Buku Teks