No Inv.: 13661/P/Perp/94/1c~714-715/P/Perp/98/2c~104830-104849/P/Perp/06/5c
No Inv.: 3069-3070/P/Perp/91/2c~9530-9534/P/Perp/92/5c~9733-9742/P/Perp/97/10c
No Inv.: 112753/P/Perp/08/1c
Judul asli : "Personal Letters for Business People"
No Inv.: 130769/SM/Perp/12/1c
Judul asli :"Accounting"
No Inv.: 122276-122280/P/Perp/10/5c
No Inv.: 81610-81622/P/02/14c~88865-88874/P/Perp/04/10~88855-88864/P/Perp/04/10c~100875-100881/P/Perp/05/7c~104850-104859/P/Perp/06/10c~128309/SM/Perp/10/1c
Judul asli : "The Electronic Office"