APA Style
Azar, B, S.
(1989).
Understanding and Using English Grammar, 2 nd
(
2)
.
New Jersey:
Prentice Hall Regents.
MLA Style
Azar, Betty, Schrampfer.
"Understanding and Using English Grammar, 2 nd".
2
New Jersey:
Prentice Hall Regents,
1989.
Text.