Scobie, J. (1961). English for the certificate. G. Allen & Unwin.
Lua i Stíl Chicago (17ú heag.)Scobie, J. English for the Certificate. London: G. Allen & Unwin, 1961.
Lua MLA (9ú heag.)Scobie, J. English for the Certificate. G. Allen & Unwin, 1961.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.