No Inv.: 1322-1323/BD/Perp/86/2c
No Inv.: 6265/P/99/1c
No Inv.: 3721/Perp/86/1c~3552/Perp/86/1c
Judul asli : "Effective Leadership, a Self-development Manual"
No Inv.: 82589-82593/P/Perp/02/5c348-350/P/Perp/92/3c~3077/P/Perp/99/1c~118383-118387/P/Perp/09/5c
No Inv.: 044/S/Perp/92/1c~2772/P/Perp/92/1c
No Inv.: 114279/P/Perp/08/1c