by Sayyid Quthb $20.00
by Prof. Dr. Suharsimi Arikunto $6.00
by Prof. Dr. Abuddin Nata, MA $9.00
by - $5.00
by Drs. R. Suharno $6.00
by Dr. Abdul Wahid Al-Wakil $7.00
by Hindah Muaris $6.00