Dacey, John S.
McGraw-Hill, 2002
Buku Teks
Gillespie, Sheena
Allyn and Bacon , 1994
Buku Teks
Rowe, Kim A.
American Society for Training & Development, 2010
eBooks
Vinson, Betsy Partin
Delmar Cengage Learning, 2012
Buku Teks
MN West Academic Publishing, 2015
Buku Teks