Atwood, Christee Gabour, author
American Society for Training & Development, 2007
eBooks
Chan, Janis Fisher, author
[American Management Association;, ], 1999
eBooks
edited by Wojciech Cellary, Krzysztof Walczak
Springer, 2012
eBooks
Andleigh, Prabhat K., author
Prentice-Hall, 1996
Buku Teks
Carnegie, Dorothy, author
Dale Carnegie and Associates, 1962
Buku Teks