Bogart, Theodore F., author
John Wiley & Sons, 1983
Buku Teks
Soclof, Sidney, author
Prentice-Hall, 1996
Buku Teks
Jacob, J. Michael, author
Reston Publishing, 1982
Buku Teks
Hodges, David A., author
McGraw-Hill, 1988
Buku Teks
Hibberd, R. G.
McGraw-Hill, 1969
Buku Teks