Simorangkir, J. C. T. <br/><br/>
Inti pengetahuan warga negara (good citizenship)  [microform] / 
[oleh] J. C. T. Simorangkir. 
 - [Indonesia :  s.n.,  n.d.]. 
 - 2 microfiches :  positive ;  11 X 15 cm. 
<br/><br/> Bahan IDC (Inter Documentation Company).  Modern Indonesia Project : Monographs.