APA (7th ed.) Citation

Matthies, B., & Azar, B. S. (1991). Understanding and using english grammar: Teacher´s guide (2a. edición.). Prentice hall.

Chicago Style (17th ed.) Citation

Matthies, Barbara, and Betty Schrampfer Azar. Understanding and Using English Grammar: Teacher´s Guide. 2a. edición. Englewood: Prentice hall, 1991.

MLA (9th ed.) Citation

Matthies, Barbara, and Betty Schrampfer Azar. Understanding and Using English Grammar: Teacher´s Guide. 2a. edición. Prentice hall, 1991.

Warning: These citations may not always be 100% accurate.