Tower, Ralph B., author
Prentice-Hall, 1991
Buku Teks
Capron, H.L., author
The Benjamin / Cumming Publishing Company Inc., 1989
Buku Teks
Rude, Robert T., 1942-, author
Prentice-Hall, 1986
Buku Teks
Greenfield, Joseph D., author
John Wiley & Sons, 1988
Buku Teks
Culey, Ray T., author
South-Western Publishing, 1953
Buku Teks