Não informado. (1959). Agricultural Aviation. European Agricultural Aviation Center.
Lua i Stíl Chicago (17ú heag.)Não informado. Agricultural Aviation. The Hague, Holanda: European Agricultural Aviation Center, 1959.
Lua MLA (8ú heag.)Não informado. Agricultural Aviation. European Agricultural Aviation Center, 1959.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.