Buchla, David M.
Merril, 1992
Buku Teks
Anderson, Norman A.
Chilton Book Company, 1972
Buku Teks
Carr, Joseph J.
Reston, 1979
Buku Teks
Anderson, Norman A.
Chilton Book Company, 1980
Buku Teks
edited by Stephen A. Dyer
John Wiley & Sons, 2001
Buku Referensi