Não informado. (1920). Station circular. Oregon Agricultural Experiment Station.
Lua i Stíl Chicago (17ú heag.)Não informado. Station Circular. Corvallis, Ore: Oregon Agricultural Experiment Station, 1920.
Lua MLA (8ú heag.)Não informado. Station Circular. Oregon Agricultural Experiment Station, 1920.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.