by Johanes Lim, Ph.D., CPC $7.00
by A.H. Manurung, S.E $7.00
by Achmad Tjahhono, Mahagiyani $12.00
by Prof. Komaruddin $11.00
by M. Ghufron H. Kordi K $7.00
by Dra. Sri Sundari HS., M.Pd $6.00