by Drs. Cholid Narbuko dan Drs. H. Abu Ahmadi $7.00
by Harahap, Rustam Effendi $6.00
by Hasbullah Thabrany (ed.) $11.00
by J.G. Chusid $6.00
by Prof. Ir. Zoer'ani Djamal Irwan, M.Sc $9.00
by Drs. Zainuddin, dkk $7.00