Unesco Press, 1975
Buku Teks
Van, Houten Ron
Human Sciences Press, 1980
Buku Teks
Wilson, John A. R., author
McGraw-Hill, 1974
Buku Teks
National Training Laboratories Institute for Applied Behavioral Science
Institute for Applied Behavioral Science, 1968
Buku Teks
Donald Freeman and Jack C. Richardsand , author
Cambridge Cambridge University Press 1996
Buku Teks