by Muhammad Al-Ghazali $6.00
by Dr. Sofyan Syafri Harahap, M.S,Ac $12.00
by Robert Bacal $11.00
by Dr. Alo Liliweri $11.00
by ISEI $18.00
by Franz Magnis-Suseno $13.00
by Prof. H.M. Arifin, M.Ed $9.00