Estilo APA
Azar, Betty S, Hagen, Stacy A. (2009).
Understanding And Using English Grammar Fourth Edition .
London:
Pearson Longman.
Estilo Chicago
Azar, Betty S, Hagen, Stacy A.
Understanding And Using English Grammar Fourth Edition.
London:
Pearson Longman,
2009.
Text.
Estilo MLA
Azar, Betty S, Hagen, Stacy A.
Understanding And Using English Grammar Fourth Edition.
London:
Pearson Longman,
2009.
Text.
Estilo Turabian
Azar, Betty S, Hagen, Stacy A.
Understanding And Using English Grammar Fourth Edition.
London:
Pearson Longman,
2009.
Print.