Miller, George
Prentice-Hall, 1986
Buku Teks
Garofalo, Gene, author
Prentice-Hall, 1994
Buku Referensi
Cross, Wilbur, author
Prentice-Hall, 1995
Buku Referensi
Wilson, Billie Ann, author
Pearson Education, 2003
Multimedia
Raton CRC Press, 1991
Buku Teks