No Inv.: 10966/P/Perp/98/1c
Judul asli : "Human Relationship Skill"
Judul asli : "The Practice of Entrepreneurship"
No Inv.: 1825/Perp/79/1c~47/Perp/79/1c
No Inv.: 84353/Perp/72/1c
No Inv.: 363/Perp/76/1c
No Inv.: 67546/P/00/1c
No Inv.: 80002/AF/90/1c
No Inv.: 85059-85063/P/Perp/FIS/03/5c
No Inv.: 103074/S/Perp/05/1c