by Drs. Hendiyat Soetopo $11.00
by Prof. Dr. S. Nasution, M.A. $7.00
by Dr. Ibrahim Bafadal, M.Pd $6.00
by Toemin, A. Masoem $5.00
by DR. Soekidjo Notoatmodjo $7.00
by Aryandini, Woro $6.00