No Inv.: 127042-127046/P/perp/10/5c
Bibliografi : hlm. 363-366 No Inv.: 112586-112590/P/Perp/08/5c~120257-120259/P/Perp/09/3c~121186/PH/Perp/09/1c~120449/SM/Perp/09/1c~125096-125100/P/Perp/10/5c
No Inv.: 115411/SM/Perp/08/1c
No Inv.: 119751-119753/P/Perp/09/3c~124626-124630/P/Perp/10/5c
Judul asli : "How to Make Successful Decisions"
No Inv.: 86789-86791/P/Perp/03/3c~114433-114437/P/Perp/08/5c~118545-118547/P/Perp/09/3c
No Inv.: 1880-1884/P/Perp/95/5c~376/P/Perp/90/1c.
No Inv.: 125291-125295/P/perp/10/5c
Judul asli:"Short cycle selling beating your competitors in the sales race"
No Inv.: 125855-125859/P/Perp/10/5c