by Siti Nafsiah, S.Ag $9.00
by Prof. Dr. Sondang P. Siagian, M.P.A $7.00
by - $11.00
by Prof. DR. dr. S.M. Lumbantobing, SpS(K), SpKJ $6.00
by Prof. DR. Abu Su'ud $12.00
by Mohammad Sobary $13.00
