QUIRK, R., & GREENBAUM, S. (1982). A University grammar of English. Longman Limited Group.
Lua i Stíl Chicago (17ú heag.)QUIRK, Randolph, agus Sidney GREENBAUM. A University Grammar of English. Harlow: Longman Limited Group, 1982.
Lua MLA (9ú heag.)QUIRK, Randolph, agus Sidney GREENBAUM. A University Grammar of English. Longman Limited Group, 1982.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.