Kast, Fremont Ellsworth, author
McGraw-Hill, 1979
Buku Teks
edited by M. G. Singh, A. Titli, and Laboratoire d'automatique et d'analyse des systemes du C.N.R.S
Pergamon Press, 1978
Buku Referensi
Zulauf, Carol Ann, author
[American Society for Training and Development Press, American Society for Training and Development Press], 2000
eBooks
Moscove, Stephen A., author
John Wiley & Sons, 1997
Buku Teks
Wilson, A.G., author
John Wiley & Sons, 1981
Buku Teks