HILL, L. (1978). Elementary comprehension pieces. Oxford University.
Lua i Stíl Chicago (17ú heag.)HILL, L.A. Elementary Comprehension Pieces. Hong Kong: Oxford University, 1978.
Lua MLA (9ú heag.)HILL, L.A. Elementary Comprehension Pieces. Oxford University, 1978.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.