Happy Ferdian Syah Utomo, author
2015
UI - Makalah dan Kertas Kerja
Johnson, Winslow, author
[American Management Association, ], 2004
eBooks
Breithaupt, Tim, author
[American Management Association, ], 2003
eBooks
Edward L. Nash, editor in chief
McGraw-Hill , 1992
Buku Referensi
Boyan, Lee, author
American Management Association, 1989
eBooks