Bibliografi : hlm. 113-114
No Inv.: 129091/PH/Perp/10/1c~135453/SM/Perp/13/1c~134861/SM/Perp/13/1c~139506/P/Perp/14/1c~141306-141309/P/Perp/14/4c
Bibliografi : hlm. 337-360
No Inv.: 3141-3145/P/Perp/95/5c
No Inv.: 1370-1371/BD/Perp/86/2c
Judul asli : "Positioning : the Battle for ..."
Judul asli : " Tips for manager "
No Inv.: 679/S/Perp/93/1c~5246-5247/S/Perp/86/2c~582-592/P/Perp/95/10c