by Nila Chandra $9.00
by Lembaga Kajian Hukum Bisnis FH USU Medan $6.00
by Mirawati $11.00
by Al. Wahjasudibja, Pr. $3.00
by Drs. Rohadi Abdul Fatah $7.00
by Ibnu Basyar $5.00
by Michael P. Todaro $16.00