by $11.00
by Prof. DR. A.P. Parlindungan, SH. $6.00
by M. Yahya Harahap, S.H. $9.00
by Leden Marpaung, S.H. $7.00
by Gunawan Widjaja & Kartini Mulyadi $7.00
by Prof. Mr. Dr. Sudargo Gautama $8.00