by Dr. Hamzah B. Uno, M.Pd $9.00
by Nursalam $7.00
by Munaf H. Regar $9.00
by Prof. Dr. dr. Adhi Djuanda, Sp.KK(K) $16.00
by Dr. Ibrahim Madkour $11.00
by dr. Clifford Rose & dr. Paul Davies $6.00