by Prof. Dr. Soekidjo Notoatmodjo $13.00
by Pelezar. Michael J. & E.C.S. Chan $11.00
by Mary E. Back $7.00
by Prof. dr. Sjaiful Fahmi Daili, SpKK(K) $11.00
by dr. Samsuridjal Djauzi $7.00
by Jaelani, S.Si $7.00