by Drs. Syaiful Bahri Djamarah $9.00
by Drs. Bambang Siswanto, M.A $6.00
by Dr. Moh. Shochib $9.00
by Robert A. Dahl $9.00
by Cepi Triatna, S.Pd $7.00
by Dr. H. Abuddin Nata, MA $7.00