Kirk, Kenneth L.
Plenum Press, 1991
Buku Teks
Thomson and Brooks/cole, 2007
Multimedia
Henrickson, Charles H., author
McGraw-Hill, Higher Education, 2008
Buku Teks
Campbell, Mary K., author
Brooks/Cole Cengage Learning, 2008
Buku Teks
Garrett, R. (Reginald), author
Saunders College, 1995
Buku Teks