Russell, Lou, author
American Society for Training & Development, 2012
eBooks
Asia-Pacific Center, [date of publication not identified]
Buku Teks
Makridakis, Spyros G., author
The Free Press, 1990
Buku Teks
Niles, Spencer G., author
Pearson, 2013
Buku Teks
Gesker, Ronald D., author
2020:Marketing Communications LLC, 2015
Buku Teks