Não informado. (1969). Elements. University of Alberta, Department of Elementary Education.
Lua i Stíl Chicago (17ú heag.)Não informado. Elements. Alberta, Canada: University of Alberta, Department of Elementary Education, 1969.
Lua MLA (8ú heag.)Não informado. Elements. University of Alberta, Department of Elementary Education, 1969.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.