Schure, Alexander, author
McGraw-Hill, 1978
Buku Teks
Hibberd, R. G.
McGraw-Hill, 1969
Buku Teks
Canavan, John, author
Rinehart Press, 1973
Buku Teks
Bell, David A., 1930-, author
Reston Publishing, 1981.
Buku Teks
Barna, Arpad, author
Wiley Interscience, 1970
Buku Teks