Dearden, Jean
[American Society for Training & Development Press;, ], 2001
eBooks
Bunge, Mario
Springer, 2012
eBooks
edited by Pamela S. Cenzer; Cynthia I. Gozzi
The Hawork Press , 1991
Buku Teks SO
Irwin, Penny
Churchill Livingstone, 1995
Buku Referensi
Markless, Sharon
Facet Publishing, 2006
Buku Teks SO