Margenau, Henry
Pergamon Press, 1969
Buku Teks
Baev, Alexei K.
Springer, 2012
eBooks
Dewi Anggraeni
Indra Pub, 1988
Buku Teks
Chamberlain, Neil Wolverton
McGraw-Hill, 1980
Buku Teks
National Training Laboratories Institute for Applied Behavioral Science
Institute for Applied Behavioral Science, 1968
Buku Teks