Carlson, Richard, 1961-, author
Harper, 1997
Buku Teks
Payne, Tom
Performance Press of Albuquerque, 1991
Buku Teks
Barger, Christopher, author
McGraw-Hill, 2012
Buku Teks
Christensen, Clayton M., author
Jossey-Bass Publishers, 2011
Buku Teks
Franck, Karen A., author
Wiley-Academy, 2000
Buku Teks