by Prof. Dr. Suharsimi Arikunto $9.00
by Ralph Estes $13.00
by dr. Boyke Dian Nugraha $7.00
by Ignatius Haryanto $9.00
by Istimawan Dipohusodo $13.00
by Prof. Drs. S. Pamudji, M.P.A $11.00
by H. M. N. Purwosutjipto, S.H. $8.00
by Soekartawi $7.00
by - $12.00
by Henri Chambert Loir $6.00