by Sakti A. Siregar $6.00
by Prianto & Fritz $30.00
by DR. Sunita Almatsier, M.Sc $13.00
by Khairul Basar $11.00
by dr. Samsuridjal Djauzi $9.00
by Suhardjo $7.00
by Veithzal Rivai $16.00
by Muhammad Noor $7.00
by Aziz Alimul $9.00
by Nursalam $13.00
by Sandra Brown $9.00
by HUSEIN JA'FAR AL HADAR $6.00