by WK $12.00
by Khairul Basar $11.00
by Prof. Dr. Soekidjo Notoatmodjo $9.00
by Syamsir Abduh $9.00
by Drs. Amin Widjaja Tunggal, Ak., M.B.A $11.00
by Tarmizi Taher, M.D. $7.00