by Penny, D.H. $6.00
by Dra. Ninik Widiyanti $9.00
by Dr. H. Abuddin Nata, MA $7.00
by Robert S. Redmond $7.00
by Dr. Zakiah Daradjat, dkk $11.00
by $9.00
by Ir. Mul Muyani Sutedjo $7.00