Gaya APA

Azar, B, S., Hagen, S, A. (2011). Fundamentals Of English Grammer (Ed. 4). New York: Pearson Education.

Gaya MLA

Azar, Betty, S., Hagen, Stacy, A. "Fundamentals Of English Grammer". Ed. 4 New York: Pearson Education, 2011. Buku English.