Zandvoort, R. W. (1958). A Handbook of english Grammar. Longman.
Lua i Stíl Chicago (17ú heag.)Zandvoort, R. W. A Handbook of English Grammar. London: Longman, 1958.
Lua MLA (9ú heag.)Zandvoort, R. W. A Handbook of English Grammar. Longman, 1958.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.