CRC Press, 2002
Buku Referensi
editor in chief, Charles A. Harper
McGraw-Hill, 1980
Buku Referensi
Mandl, Matthew
Reston Publishing Company, 1980
Buku Referensi
Petrocelly, K.L.
Fairmont Press, Inc., 1993
Buku Referensi
Palmer, Doc
McGraw-Hill, 1999
Buku Referensi