Presser, Stephen B., author
Thomson/West, 2010
Buku Teks
Howell, Rate A., author
Dryden Press, 1988
Buku Referensi
Breyer, Stephen G., 1938-, author
Little, Brown, 1982
Buku Teks
Breyer, Stephen G., 1938-, author
Little, Brown and Company, 1979
Buku Teks
Anderson, Ronald A., author
South-Western Publishing Company, 1967
Buku Teks