Gaya APA
Azar, B, S.
(1989).
Undestanding And Using English Grammar
(
2/3)
.
New Jersey:
Prentice-Hall, Regents.
Gaya MLA
Azar, Betty, Schrampfer.
"Undestanding And Using English Grammar".
2/3
New Jersey:
Prentice-Hall, Regents,
1989.
Text.