by Miriam Budiarjo $6.00
by Russel Jones $30.00
by $11.00
by Uddin Syamsudin $6.00
by Victor Vic $25.00
by Sri Ratna Saktimulya $12.00
by Prof. Dr. Suharsimi Arikunto $18.00
by J.H. Meulemen $6.00
by Rondang Pasaribu $6.00