by Prof. Dr. Suharsimi Arikunto, dkk $7.00
by Drs. Djalinus Syah $7.00
by Prof. H.M. Arifin, M.Ed $9.00
by Moenaf H. Regar $9.00
by Andrias Harefa $7.00
by Edhi Sutardja $6.00
by Trim Sutidja $5.00
by Leman $9.00
by Indra Gunawan $9.00
by Jamal $11.00
by Hadi Soesastro et.al $5.00
by Ramlan Ginting $9.00