Delphin, Patricia
Virgnia Reston publishing 1983 , 1983
Buku Teks
Livingstone, D.W.
Sense, 2012
eBooks
Emerald Publishing Limited, 2019
eBooks
Wilson, John A.R.
McGraw-Hill, 1974
Buku Teks
National Training Laboratories Institute for Applied Behavioral Science
Institute for Applied Behavioral Science, 1968
Buku Teks