by Fakultas Psikologi Untar $6.00
by Hans Dieter Evers, dkk. $24.00
by J. M. Coetze $21.00
by Richard H. Chauvel $22.00
by Pira Sudham $6.00
by Suyono, Djoko, dkk $10.00
by Sabrur R. Soenardi $6.00