Kirkpatrick, Larry D., author
Brooks/Cole Cengage Learning, 2010
Buku Teks
Buku Teks
Rosenbloom, Bert, author
South Western Cengage Learning, 2012
Buku Teks
Scherer, James A.B., author
The Hokuseido Press, 1933
Buku Teks
Boyd, Harper W., Jr., author
Prentice-Hall, 1967
Buku Teks