Hoyt, Joseph Bixby.
Prentice-Hall, 1973
Buku Teks
Brubaker, Sterling, author
A Mentor Book, 1972
Buku Teks
Bennett, Charles F., author
John Wiley & Sons, 1975
Buku Teks
Knapp, B.J., author
George Allen and Unwin, 1982
Buku Teks
Watson, Richard A., author
Harcourt, Brace and World, 1969
Buku Teks