by Prof. Dr. Syahrin Harahap MA (Ed) $6.00
by Endang Saifuddin Anshari $12.00
by Ir. Hatta Sunanta, B.Sc., MS $6.00
by Denis Robinson, OSB $6.00
by E. Martasudjita, Pr. $4.00
by Y.I. Iswarahadi, SJ. $4.00