No Inv.: 10988/P/Perp/98/1c
No Inv.: 2785/P/Perp/98/1c
No Inv.: 3076/P/Perp/98/1c
Judul asli : "The Principles of Sociology"
No Inv.: 2588-2596/P/Perp/98/9c
No Inv.: 2913-2920/P/Perp/98/2c
No Inv.: 1640/S/Perp/98/1c
Judul asli : "Collective Leadership and Factionalism"
No Inv.: 447/P/Perp/97/1c