Gaya APA
Azar, B, S.
(2002).
Understanding And Using English Grammar
(
Cet.2)
.
Jakarta:
Binarupa Askara.
Gaya MLA
Azar, Betty, Schrampfer.
"Understanding And Using English Grammar".
Cet.2
Jakarta:
Binarupa Askara,
2002.
Text.