Gaya APA

Azar, B, S. (1999). Pend. Bahasa Inggris. Understanding and Using English Grammar (Third Edition). Virginia USA: Longman Group.

Gaya MLA

Azar, Betty, Schrampfer. "Pend. Bahasa Inggris. Understanding and Using English Grammar". Third Edition Virginia USA: Longman Group, 1999. Text.