Batten, T.R.
The human factor in youth work / T.R. Batten eith the collaboration of Madge Batten
Oxford University Press, 1970
 Buku Teks SO
Zimmerman, Constance
Asserting yourself at work
[American Management Association;, ], 2010
 eBooks
Doxiadis, C.A.
The human settlements that we need
Tata McGraw-Hill, 1976
 Buku Teks SO
A Handbook of structured experiences for human relations training
edited by J. William Pfeiffer and John E. Jones
University Associates, 1985
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Pfeiffer, J. William
Reference guide to handbooks and annuals: 1985 edition. vol. I-X and '72-85 annuals / J. William Pfeiffer
University Associates, 1985
 Buku Teks SO