Greenbaum, S. (1996). An introduction to English grammar. Longman.
Lua i Stíl Chicago (17ú heag.)Greenbaum, Sidney. An Introduction to English Grammar. Harlow, Essex, Eng: Longman, 1996.
Lua MLA (9ú heag.)Greenbaum, Sidney. An Introduction to English Grammar. Longman, 1996.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.