by Peter Kelman [and others]
Addison-Wesley, 1983
Buku Teks
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
Donald Freeman and Jack C. Richardsand
Cambridge Cambridge University Press 1996
Buku Teks
Miguel A R B Castanho, editor
[, Springer], 2012
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