Mcevoy, Sean, author
Routledge, 2006
Buku Teks
Russell, Jeffrey, author
American Society for Training & Development, 2006
eBooks
Haneberg, Lisa, author
American Society for Training & Development, 2006
eBooks
Beenham, Rosemary, author
Clive Bingley, 1990
Buku Teks
Chandler, Daniel, author
Routledge , 2007
Buku Teks