by Ali Imron, M.Pd $7.00
by H.A.R. Tilaar $11.00
by Ranakusuma, Boedisantoso $6.00
by Tinbergen, Jan $6.00
by Djamaluddin Darwis $7.00
by Fina Af'ldatussofa, dkk $6.00
by Zulaini Wahab $12.00
by Gunawan Widjaja, A. Yani $9.00
by - $5.00