Dugopolski, Mark, author
McGraw-Hill, 2000
Buku Teks
Hutchison, Donald, author
McGraw-Hill, 2000
Multimedia
Sobel, Max A., author
Prentice-Hall, 1980
Buku Teks
Bryant, Steven J., author
Glencoe Press, 1968
Buku Teks
Flanders, Harley, author
Academic Press, 1975
Buku Teks