by Drs. H.A.F. Idris $11.00
by Saras Dewi $6.00
by BEBY HARYANTI DEWI, DKK $7.00
by Randal T.B. & Iman Budhi $7.00
by Dr. Ir. Kemas Ali Hanafiah, M.S., dkk $11.00
by Redaksi Rineka Cipta $7.00
