by DR. Ir. Liliek Agustina $6.00
by Sabartua Tampubolon $9.00
by Susmayati, B.A., dkk $7.00
by M. Yahya Harahap, S.H. $9.00
by Drs. Syaiful Bahri Djamarah $9.00
by Niniek Supami, S. H. $7.00