Não informado. (1959). Canadian agricultural engineering. Canadian Society of Agricultural Engineering.
Lua i Stíl Chicago (17ú heag.)Não informado. Canadian Agricultural Engineering. Ottawa: Canadian Society of Agricultural Engineering, 1959.
Lua MLA (8ú heag.)Não informado. Canadian Agricultural Engineering. Canadian Society of Agricultural Engineering, 1959.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.