A. Ridwan Halim, 1954-
Ghalia Indonesia, 1986
Buku Teks SO
R. Soesilo
Politeia, 1981
Buku Teks SO
DeForest, Holly
[American Society for Training & Development Press, American Society for Training & Development Press], 2005
eBooks
Artikel Jurnal
edited by Kenneth E. Beer
U.S. and World Publications, 1961
Buku Teks SO