Morrison, Donald F., author
McGraw-Hill International Book Company, 1983
Buku Teks
Bailley, Norman T. J., author
Cambridge University Press, 1992
Buku Teks
Morrison, Donald F., author
McGraw-Hill, 1990
Buku Teks
Cowden, Dudley J.
Prentice-Hall, 1957
Buku Teks
Goulden, Cyril H., author
John Wiley & Sons, 1952
Buku Teks