by Victor Situmorang, S.H $7.00
by DR. Soekidjo Notoatmodjo $7.00
by Nursalam $12.00
by Rebbeca Johnson $9.00
by S. Wibowo $13.00
by Susmayati, B.A., dkk $7.00
by Dr. Ronald Hutapea, SKM, Ph.D $9.00