by Prof. DR. Sukardjo $13.00
by Prof. Dr. Moh. Mahfud MD, S.H., S.U. $9.00
by - $7.00
by Prof. Mr. Roeslan Saleh $6.00
by Prof. Dr. H.A.R. Tilaar, MSc.Ed $11.00
by Tom Bottomore $7.00