Judul asli : "The Essence of Leadership"
Bibliografi : hlm. 103-106No Inv.: 135485/SM/Perp/13/1c~135640/SM/Perp/13/1c
No Inv.: 104640/P/Perp/06/1c
No Inv.: 276/AF/Perp/91/1c~41/AF/Perp/91/1c
No Inv.: 1245-1248/P/Perp/94/4c~4297-4301/P/Perp/95/5c
No Inv.: 1181-1183/P/Perp/92/3c~1080-1084/P/Perp/99/5c
Judul asli : "Structure and Process of Organization"
No Inv.: 868/S/Perp/94/1c~868/S/Perp/86/1c~206/S/Perp/91/1c~686/S/Perp/90/1c~822/S/Perp/88/1c~1045/S/Perp/92/1c
Bibliografi : hlm. 353-354
No Inv.: 806-807/Perp/92/2c~1107-1115/P/Perp/9c