TY  - JOUR
ID  - eprints18163
UR  - http://digilib.unila.ac.id/18163/
A1  - 0611031095, Yudika Fernando Lubis
Y1  - 2012/03/04/
N2  - NN
JF  - Digital Library
TI  - NN
AV  - public
ER  -