by H. A. Prayitno, Bambang S. Mintargo, Trubus Rahardiansah $9.00
by Prof. Dr. Suharsimi Arikunto $6.00
by Prof. Mr. Dr. Sudargo Gautama $7.00
by Prof. I. R. Poedjawiyatna $7.00
by Suhrawardi K. Lubis, S. H. $9.00
by Drs. Hafifi $22.00
by Prof. Mr. Dr. Sudargo Gautama $5.00
by Suhardi $5.00
by Robert W. Hefner $16.00