Gaya APA

Azar, B, S. (1989). Understanding And Using English Grammar Second Edition (Pertama). Englewood Cliffs, New Jersey: Prentice-Hall, Inc..

Gaya MLA

Azar, Betty, Schrampfer. "Understanding And Using English Grammar Second Edition". Pertama Englewood Cliffs, New Jersey: Prentice-Hall, Inc., 1989. Text.