Ettinger, Richard P.
Prentice-Hall, 1950
Buku Teks
Arvey, D. Richard
Addison-Wesley, 1988
Buku Teks
Gwartney, James D.
FL. The Dryden Press, 1995
Buku Teks
Gwartney, James D.
Harcourt Brace Jovanovich, Publisher, 1987
Buku Teks
Albanese, Robert
Dryden Press, 1983
Buku Teks