by - $13.00
by Budi Rachmat, SE, MM $9.00
by M.E. Dicks $6.00
by Drs. Zifirdaus Adnan & Dra. I. Zifirdaus $9.00
by Prof. S.H. Rewoldt, Terj. Drs. A.H. Ali $7.00
by Prof. Mr. Notonagoro $9.00
by Drs. H. Abu Ahmadi $9.00
by Helbert A. Simon $13.00
by Prof. Komaruddin $9.00
by Dra. Hj. Azimar Enong, dkk $7.00
by E. Fernando M. Manullang $9.00
by WK $12.00