by M. Yahya Harahap, S. H. $20.00
by Leden Marpaung, S.H. $7.00
by Parwoto Wignjosumarto $11.00
by Prof. Drs. C.S.T. Kansil, S.H. $11.00
by Prof. Purnadi Purbacaraka, S,H. & Prof. Dr. Soerjono Soekanto, S.H., M.A. $3.00
by Dr. Ahmad Rofiq, MA $12.00