by Zulkarimein Nasution $9.00
by Dr. Soegeng Santoso, M.Pd dan Dra. Anne Lies Ranti., M.Pd $9.00
by - $13.00
by Prof. Drs. H.A.W. Widjaja $6.00
by Kosuke Mizuno, Indrasari Tjandraningsih, Rina Herawati $31.00
by Prof. Dr. H.A.R. Tilaar, MSc.Ed $9.00
by Frans Gromang $9.00