by S. Wibowo $13.00
by Aloys Budi Purnomo, Pr. $4.00
by Komkat KAS $6.00
by dr. Muhardi Muhiman, Prof. dr. Arjatmo Tj. $5.00
by Calvin S. Hall & Gradner Lindzey $12.00
by N. Edy Soetanto, BE. $5.00