Carr, Herman Y., author
McGraw-Hill, 1971
Buku Teks
Senson, Ben, author
Delmar Cengage Learning, 2011
Buku Teks
Hodell, Chuck, author
American Society for Training & Development, 2006
eBooks
Hodell, Chuck, author
American Society for Training & Development, 2011
eBooks
edited by Patrick Daly, R. Michael Feener and Anthony Reid
Institute of South East Asia Studies, 2012
eBooks