Azar, B. S. (2002). Understanding and using English grammar (3rd ed.). Prentice Hall Regents.
Lua i Stíl Chicago (17ú heag.)Azar, Betty Schrampfer. Understanding and Using English Grammar. 3rd ed. Upper Saddle River, NJ: Prentice Hall Regents, 2002.
Lua MLA (8ú heag.)Azar, Betty Schrampfer. Understanding and Using English Grammar. 3rd ed. Prentice Hall Regents, 2002.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.