No Inv.: 1842-1844/Perp/79/3c~1863/Perp/79/1c
No Inv.: 985/S/Perp/90/1c~7634/S/01/1c~76552/S/01/1c
No Inv.: 68145-68147/S/00/3c
Judul asli : "Group Communication : Discussion Processes and Application"
No Inv.: 129630-129632/S/Perp/11/3c
No Inv.: 2537-2546/P/Perp/97/10c
No Inv.: 1162-1171/P/Perp/97/10c
No Inv.: 5302-5311/P/Perp/97/10c
No Inv.: 241-250/P/Perp/97/10c