by Drs. Suwarno $7.00
by Murad Lesmana, Jeanette $5.00
by Cepi Triatna, S.Pd $7.00
by R. Ibrahim dan Nana Syaodih. S $7.00
by Dr. H. Abuddin Nata, MA $7.00
by Prof. Dr. H.A.R. Tilaar, MSc.Ed $11.00
by Nalbandov, A.V $7.00
by Nursalam $9.00