by Freddy Rangkuti $11.00
by Prof. Dr. Budi Winarno $9.00
by Sadono Sukirno $13.00
by - $16.00
by Yernelis Sukma, M.S., & Yakup $7.00
by Brian J. Sharkey $13.00
by Adiwarman A. Karim $13.00
by Drs. Surajiyo $7.00
by Lyle W. Morgan II, Ph.D., HMD $7.00
by K.H. Moenawar Chalil $11.00
by S. Mara Gd $9.00
by Lalu Syafi'i, Drs. $9.00