Proctor, K. Scott
John Wiley & Sons, 2004
Buku Teks
Russell, Roberta S., author
Prentice-Hall, 2000
Buku Teks
Dilworth, James B., 1939-, author
Random House, 1979
Buku Teks
Shafer, Scott M., author
John Wiley & Sons, 1998
Buku Teks
edited by Joseph F. McCloskey, Florence N. Trefethen
John Hopkins Press, 1954
Buku Teks