Thorpe, Brian, author
[Gower, ], 2005
eBooks
Tomlinson, M. J. (Michael John), author
E & Fn Spon, 1997
Buku Referensi
Frederick S. Merritt and Jonathan T. Ricketts, editor
McGraw-Hill, Inc, 1994
Buku Referensi
Pyster, Arthur B., author
Van Nostrand Reinhold, 1980
Buku Teks
Traister, John E., author
McGraw-Hill, 1985
Buku Teks