Não informado. (1924). Agricultural Progress. Agricultural Education Association.
Lua i Stíl Chicago (17ú heag.)Não informado. Agricultural Progress. London: Agricultural Education Association, 1924.
Lua MLA (8ú heag.)Não informado. Agricultural Progress. Agricultural Education Association, 1924.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.