by Sunarto Kusdiarjo $5.00
by Drs. Agus M. Hardjana, M.Sc., Ed $3.00
by Titik F. Djafar - Siti Rahayu $6.00
by Agung Kristiawan $9.00
by Prof. drh. Charles Rangga Tabbu, M.Sc., Ph.D $18.00
by Dr. Martin Harun, OFM / LBI $7.00