Maccchiavelli, Mariarita, author
Sterling Publishing, 1998
Buku Referensi
Evenson, Renee, 1951-, author
American Society for Training and Development, 2005
eBooks
Evenson, Ren`ee, author
Amacom, 2005
Buku Teks
Evenson, Renee, 1951-, author
American Management Association, 2011
eBooks
Poplar, Vitta, author
Andrews McMeel Publishing, 2001
Buku Teks