APA (7th ed.) Citation
Azar, B. S. (1989). Understanding and using english grammar (2.vyd.). Prentice Hall Regents.
Chicago Style (17th ed.) Citation
Azar, Betty Schrampfer. Understanding and Using English Grammar. 2.vyd. Upper Saddle River: Prentice Hall Regents, 1989.
MLA (9th ed.) Citation
Azar, Betty Schrampfer. Understanding and Using English Grammar. 2.vyd. Prentice Hall Regents, 1989.
Warning: These citations may not always be 100% accurate.