Smith, Karl J., author
Brooks/Cole, 1985
Buku Teks
Sobel, Max A., author
Prentice-Hall, 1980
Buku Teks
Hutchison, Donald, author
McGraw-Hill , 2000
Multimedia
Hutchison, Donald, author
2000
Multimedia
Marcus, Marvin, author
Houghton Mifflin, 1968
Buku Teks