Klumpp, Gerhard W., author
John Wiley & Sons, 1982
Buku Teks
Raton CRC Press, 1991
Buku Teks
Davidson, Jon P., author
Prentice Hall, 1997
Buku Teks
Brace, C. Loring, author
Macmillan, 1969
Buku Teks
Hamblin, W. Kenneth (William Kenneth), 1928-, author
Burgen Publishing, 1985
Buku Teks