Maimon, Elaine P., author
McGraw-Hill , 2003
Buku Referensi
Maimon, Elaine P., author
McGraw-Hill, 2002
Buku Teks
edited by Jean M. Fredette
Writer`s Digest Books, 1988
Buku Teks
Connelly, Mark, author
Wadsworth and Cengage Learning, 2013
Buku Teks
Mahmoud, Shah, author
Betterway, 1992
Buku Referensi