Bartley, J. (1968). A guide to English composition. Oxford University press.
Lua i Stíl Chicago (17ú heag.)Bartley, J. A Guide to English Composition. New Delhi: Oxford University press, 1968.
Lua MLA (9ú heag.)Bartley, J. A Guide to English Composition. Oxford University press, 1968.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.