Não informado. (1960). Agriculture in Northern Ireland. Department of Agriculture.
Lua i Stíl Chicago (17ú heag.)Não informado. Agriculture in Northern Ireland. Belfast, Irlanda: Department of Agriculture, 1960.
Lua MLA (8ú heag.)Não informado. Agriculture in Northern Ireland. Department of Agriculture, 1960.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.