Hill, L. (1964). Elementary refresher course. O.U.P.
Lua i Stíl Chicago (17ú heag.)Hill, L. Elementary Refresher Course. London: O.U.P, 1964.
Lua MLA (9ú heag.)Hill, L. Elementary Refresher Course. O.U.P, 1964.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.