Morris, Alan S., author
Elsevier, 2006
Buku Teks
Aston, Richard, author
Macmillan, 1990
Buku Teks
Buchla, David M., author
Merril, 1992
Buku Teks
Carr, Joseph J., author
Reston, 1979
Buku Teks
edited by Stephen A. Dyer
John Wiley & Sons, 2001
Buku Referensi