by N. Suparni, S.H dan DR. Andi Hamzah, S.H $11.00
by Bakry, Hasbullah $7.00
by Prof. H.M. Arifin, M.Ed $7.00
by Prof. Dr. Suharsimi Arikunto $6.00
by $4.00
by Ir. Mul Muyani Sutedjo $7.00