Kuc, Roman, author
McGraw-Hill, 1988
Buku Teks
Lynn, Paul A., author
John Wiley & Sons, 1994
Buku Teks
Oppenheim, Alan V., author
Prentice Hall of India, 1997
Buku Teks
edited by Alan V. Oppenheim
Prentice-Hall, 1978
Buku Teks
Stanley, William D., author
Reston Publishing, 1984
Buku Teks