by S. Soegijanto $11.00
by Aziz Alimul $7.00
by Prof. Dr. dr. Daldiyono $16.00
by Tierney $18.00
by dr. Endang Lanywati $5.00
by Dr. Soegeng Santoso, M.Pd dan Dra. Anne Lies Ranti., M.Pd $9.00