Não informado. (1967). Early Childhood Education. Alberta Teachers Association.
Lua i Stíl Chicago (17ú heag.)Não informado. Early Childhood Education. Edmonton, Canada: Alberta Teachers Association, 1967.
Lua MLA (8ú heag.)Não informado. Early Childhood Education. Alberta Teachers Association, 1967.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.