Não informado. (1919). Forestry Commission Bulletin. Forestry Commission.
Lua i Stíl Chicago (17ú heag.)Não informado. Forestry Commission Bulletin. London: Forestry Commission, 1919.
Lua MLA (8ú heag.)Não informado. Forestry Commission Bulletin. Forestry Commission, 1919.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.