No Inv.: 1076/S/Perp/90/1c
No Inv.: 1893/S/Perp/88/1c~350/S/Perp/88/1c
Judul asli : "The Task of Law"
No Inv.: 1370/S/Perp/88/1c~1303/S/Perp/87/1c
No Inv.: 2899-2900/P/Perp/91/2c
No Inv.: 1512/S/Perp/88/1c
No Inv.: 1440-1442/P/Perp/94/3c~1861-1865/P/Perp/95/5c
No Inv.: 355/S/Perp/88/1c
Bibliografi : hlm. 313-316 No Inv.: 135170/SM/Perp/13/1c~140857/PSM/Perp/14/1c
No Inv.: 69/PSM/Perp/97/1c