Gaya APA

Azar, B, S., Hagen, S, A. (2006). Basic english grammar : Betty Schrampfer Azar, Stacy A. Hagen (Ed. 3). New York: Pearson Education.

Gaya MLA

Azar, Betty, Schrampfer., Hagen, Stacy, A.. "Basic english grammar : Betty Schrampfer Azar, Stacy A. Hagen". Ed. 3 New York: Pearson Education, 2006. Buku.