by Prof. Dr. Miftah Thoha $11.00
by Stephen Hirstenstein $11.00
by Prof. Dr. Suharsimi Arikunto $9.00
by DR. Maria S.W. Sumardjono, SH $6.00
by Gunawan Widjaja, A. Yani $9.00
by Agus Setiawan $12.00