by Dr. Hj. Tien Ch. Tirtawarna, SpGK $13.00
by Darmono $7.00
by Tanenbaum $13.00
by Dr. Al Rasyid, SpS, Dr. Lyna Soertidewi, SpS(K) $7.00
by WK $16.00
by Shelly $26.00
by Drs. Jumingan, S.E., M.M., M.Si $0.00
by Prof. Dr. Sondang P. Siagian, M.P.A $11.00
by Steven Pressman $9.00
by Karen Amen, Tee Dobinson $7.00
by Aziz Alimul $11.00
by Carole Mortimer $7.00