by F. Suryatmo $7.00
by Drs. Suyadi Prawirosentono, MBA $7.00
by Mansur Samin $6.00
by Drs. Robinson Tarigan $9.00
by H. Rahmat Rukmana $6.00
by Dr. Ibrahim Bafadal, M.Pd $6.00
by Raswari $7.00
by Howard Clinebell $13.00
by $4.00
by $6.00
by Abdul Halim Abu Syuqqah $12.00
by Thomas A. N. S $6.00