Alur, Deepak, author
Prentice-Hall, 2003
Buku Teks
Edited by Margaret Simmons; Rebecca Koskela
Addison-Wesley Pub., 1990
Buku Teks
Richmond, Wendy, author
Van Nostrand Reinhold, 1990
Buku Referensi
Prince, M. David, author
Addison-Wesley, 1971
Buku Teks
Bob Gordon, consultant editor; Maggie Gordon, consultant editor
Watson-Guptill Publications, 2002
Buku Teks