APA Style
Hagen, S, A., Azar, B, S. (2006).
Basic English Grammar 3rd Ed. With Answer Key (3rd).
America:
Pearson Longman.
MLA Style
Hagen, Stacy, A.., Azar, Betty, Schrampfer.
"Basic English Grammar 3rd Ed. With Answer Key".
3rd
America:
Pearson Longman,
2006.
Koleksi Buku Teks.