Richard D. Irwin, 1972
Buku Teks
Bish, Robert L., author
Prentice-Hall, 1974
Buku Teks
Kiekhofer, William H., author
D. Appleton Century, 1946
Buku Teks
Meade, James E., author
University of Chicago Press, 1953
Buku Teks
Hailstones, Thomas J., author
South-Western Publishing, 1985
Buku Teks