No Inv.: 479/P/Perp/97/1c
Judul asli : "The Persuasive Presentation : a Practical Guide to Profesional Communication in Organizations"
Judul asli : "Men are from Mars Woman are from Venus"
Judul asli : "Human Relationship Skill"
No Inv.: 1493/S/Perp/98/1c~79065-796066/S/01/2c
No Inv.: 193/P/Perp/98/1c~3654/P/Perp/99/1c
No Inv.: 1641/S/Perp/98/1c
No Inv.: 1560-1561/S/Perp/98/2c
JKudul asli : "Conversational Power : the Key to Success with People"
No Inv.: 3766-3767/P/Perp/99/2c~1020/P/Perp/99/1c