Boone, Louis E., author
Dryden Press, 1996
Buku Teks
Boone, Louis E., author
Dryden Press, 1990
Buku Teks
Pride, William M., author
South Western Cengage Learning, 2012
Buku Teks
Shubin, John A., author
Barnes & Noble Books, 1957
Buku Teks
edited by Joel J. Lersier
Englewood Cliffs, N.J., Prentice-Hall
Buku Teks