Maimon, Elaine P., author
McGraw-Hill, 2002
Buku Teks
Maimon, Elaine P., author
McGraw-Hill , 2003
Buku Referensi
edited by Jean M. Fredette
Writer`s Digest Books, 1988
Buku Teks
edited by Barry Turner
Macmillan and The Free Press, 1992
Buku Referensi
edited by Barry Turner
Macmillan, 1992
Buku Referensi