Wilhide, Elizabeth, author
Tabori & Chang, 1998
Buku Teks
Conran Octopus, 1991
Buku Referensi
Montgomery, James M., author
John Wiley & Sons, 1985
Buku Teks
Stephen J. Randtke, Michael B. Horsley, editor
McGraw-Hill, 2012
Buku Teks
edited by Michael J. Suess
Pergamon Press, 1982
Buku Referensi