APA (7th ed.) Citation

Azar, B. S., Spack Koch, R., & Hagen, S. A. (2011). Fundamentals of English Grammar: Workbook (4th. edición.). Pearson education.

Chicago Style (17th ed.) Citation

Azar, Betty Schrampfer, Rachel Spack Koch, and Stacy A. Hagen. Fundamentals of English Grammar: Workbook. 4th. edición. New York: Pearson education, 2011.

MLA (9th ed.) Citation

Azar, Betty Schrampfer, et al. Fundamentals of English Grammar: Workbook. 4th. edición. Pearson education, 2011.