by Drs. Laden Marpaung, S.H. $8.00
by Prof. Abdulkadir Muhammad, S.H. $7.00
by Tim Redaksi Tatanusa $12.00
by Hutabarat, Sahala & Evans, Stewart M $6.00
by Jazim Hamidi & Budiman N.P.D. Sinaga $7.00
by $9.00