Dubin, Robert, author
Prentice-Hall, 1962
Buku Teks
National Training Laboratories Institute for Applied Behavioral Science
Institute for Applied Behavioral Science, 1968
Buku Teks
Crow, Lester D., author
American Book Comp, 1956
Buku Teks
Bloom, Benyamin S., author
McGraw-Hill, 1976
Buku Teks
Baldwin, Bruce A., author
International Thomson Publishing, 1999
Buku Teks