Gaya APA

Azar, B, S. (2003). Fundamentals of English Grammar : with Answer key : Betty Schrampfer Azar (ed.3). New York: Longman.

Gaya MLA

Azar, Betty, Schrampfer. "Fundamentals of English Grammar : with Answer key : Betty Schrampfer Azar". ed.3 New York: Longman, 2003. Buku.