Kelly, Eric Damian
Island Press, 2000
Buku Teks
O`Connell, Jeffrey
Commerce Clearing House, 1971
Buku Teks
Huebner, S. S., author
Appleton-Century Crafts, 1958
Buku Teks
Black, Kenneth, author
Prentice-Hall, 1994
Buku Teks
edited by William F. Bluhm, Daniel D. Skwire, Stephen J. Kaczmarek and Kristi M. Bohn
ACTEX Publications, 2012
Buku Teks