by Leden Marpaung, S.H. $11.00
by Prof. DR. Sri Redjeki Hartono, SH. $5.00
by - $5.00
by Prof. Dr. Soerjono Soekanto, S.H., M.A. $7.00
by Prof. Kusumadi Poedjosewojo, S.H. $9.00
by Bagir Manan $7.00