edited by Warren G. Bennis, Kenneth D. Benne and Robert Chin
Holt, Rinehart and Winston 1961, 1961
Buku Teks
Hinkle, Dennis E., author
Houghton Mifflin, 2003
Buku Teks
by Harvey A. Horstein [and others]
Free Press a Division of Macmillan, 1971
Buku Teks
Cooper, Robert L., author
Cambridge University Press, 1989
Buku Teks
Kunkel, John H.
Oxford University Press, 1970
Buku Teks