Gaya APA
Azar, B, S.
(1993).
Understanding And Using English Grammar
(
Cet. 2)
.
JAKARTA:
BINARUPA AKSARA.
Gaya MLA
Azar, Betty, Schrampfer.
"Understanding And Using English Grammar".
Cet. 2
JAKARTA:
BINARUPA AKSARA,
1993.
Text.