Judul asli : "Secrets of Power Presentations"
Judul asli : "How to Talk Anyone, Anytime, Anywhere"
No Inv.: 2944-2953/P/Perp/97/10c~2797/P/98/1c
Judul asli : "Positive Stress Management ..."
Judul asli : "Planning and Managing Change"
No Inv.: 134743,13444/SM/Perp/13/2c