Gaya APA

Azar, B, S. (24). Understanding and using english grammar (Ed2 (Inggris - Indonesia)). New Jersey: Prentice Hail Regents.

Gaya MLA

Azar, Betty, Schrampfer. "Understanding and using english grammar". Ed2 (Inggris - Indonesia) New Jersey: Prentice Hail Regents, 24. Text.