Basic Books, 1956
Buku Teks
Seleebey, Dennis, author
Columbia University Press, 2001
Buku Teks
Nelson-Jones, Richard, author
Harcourt, Brace & World, 1996
Buku Teks
edited by Warren G. Bennis, Edgar H. Schei, and David E. Berlew
Dorsey Press, 1964
Buku Teks
edited by Richard H. Hall
Basic Books, 1972
Buku Teks