No Inv.: 90854-90857/P/Perp/05/4c
No Inv.: 1880-1884/P/Perp/95/5c~376/P/Perp/90/1c.
Bibliografi : hlm. 275-282 No Inv.: 136542/SM/Perp/13/1c
No Inv.: 125291-125295/P/perp/10/5c
Judul asli:"Short cycle selling beating your competitors in the sales race"
Seri Umum No.4
No Inv.: 111942-111946/P/Perp/08/5c~120480/SM/Perp/09/1c~136327/SM/Perp/13/1c
No Inv.: 128606/PH/Perp/10/1c
No Inv.: 125855-125859/P/Perp/10/5c