by Akbar Faizal $12.00
by Dr. Ir. M\'Imadduddin Abdul Rahim, M.Sc $6.00
by Nuruddin Asyhadie $7.00
by Dr. Zakiah Daradjat, dkk $9.00
by Anand Krishna $7.00
by Sisca Soewitomo $6.25
by Prof. DR. Abu Su'ud $12.00