APA Style

Azar, B, S., Hagen, S, A. (2006). Basic english grammar: third edition [audio CD] (3rd ed. with answer key). White Plains, NY :: Pearson Longman,.

MLA Style

Azar, Betty, Schrampfer., Hagen, Stacy, A.. "Basic english grammar: third edition [audio CD]". 3rd ed. with answer key White Plains, NY :: Pearson Longman,, 2006. Audio CD.