Gaya APA
Gusnidar, D, D. (2003).
WINDOW ON THE WORLD A NEW APPROACH TO LEARNING ENGLISH FOR SMU YEAR 1 .
Jakarta:
Erlangga.
Gaya MLA
Gusnidar, Dra.,, Dkk.
"WINDOW ON THE WORLD A NEW APPROACH TO LEARNING ENGLISH FOR SMU YEAR 1".
Jakarta:
Erlangga,
2003.
Text.