APA Style

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

MLA Style

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