Não informado. (1980). For the Learning of Mathematics. FLM Publishing Association.
Lua i Stíl Chicago (17ú heag.)Não informado. For the Learning of Mathematics. Montreal, Canada: FLM Publishing Association, 1980.
Lua MLA (8ú heag.)Não informado. For the Learning of Mathematics. FLM Publishing Association, 1980.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.