Gaya APA
Azar, B, S., Matthies, B, F. (1997).
Basic English Grammar (Ed.2).
Amerika Serikat:
Prentice Hall Regents.
Gaya MLA
Azar, Betty, Schrampfer., Matthies, Barbara, F..
"Basic English Grammar".
Ed.2
Amerika Serikat:
Prentice Hall Regents,
1997.
Text.