Burton, Glyn
Prentice-Hall, 2000
Buku Teks
by David R. Anderson, Dennis J. Sweeney, Thomas A. Williams, Jeffrey D. Camm, Kipp Martin
South Western Cengage Learning, 2013
Buku Teks
Gallagher, Charles A.
McGraw-Hill International Book Company, 1980
Buku Teks
Frank, Ronald E.
Prentice-Hall, 1967
Buku Teks
Floud, Roderick
Princeton University Press, 1973
Buku Teks