Collis, M. (1975). Ways and means: A unit for teachers. Macdonald Educational.
Lua i Stíl Chicago (17ú heag.)Collis, Margaret. Ways and Means: A Unit for Teachers. London: Macdonald Educational, 1975.
Lua MLA (9ú heag.)Collis, Margaret. Ways and Means: A Unit for Teachers. Macdonald Educational, 1975.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.