by Sindhunata $11.00
by Prof. Subowo, dr. M.Sc., Ph.D $7.00
by Sidarta Gautama $7.00
by Drs. H. Malayu S.P. Hasibuan $7.00
by Drs. Ahsin W. Al-Hafidz $6.00
by Dr. Hamzah B. Uno, M.Pd $0.00