Bray, Richard Nicholas
Arnold, 1997
Buku Referensi
King, Reno C., author
McGraw-Hill, 1967
Buku Referensi
edited by Byron D. Tapley
John Wiley & Sons, 1990
Buku Referensi
Smeaton, Robert W.
McGraw-Hill, 1969
Buku Referensi
Cirovic, MIchael M., author
Reston Publishing Company, 1981
Buku Referensi