Patrick, John J., author
Prentice Hall PTR, 1999
Buku Teks
Chin, Patricia, author
McGraw-Hill, 1995
Buku Teks
Griffin, Ricky W., author
South Western Cengage Learning, 2012
Buku Teks
Odum, Eugene P. (Eugene Pleasants), author
Brooks/Cole Cengage Learning, 2005
Buku Teks
Stanton, William J., author
McGraw-Hill, 1984
Buku Teks