Não informado. (1919). Bee World. International Bee Research Association.
Lua i Stíl Chicago (17ú heag.)Não informado. Bee World. Bucks, Inglaterra: International Bee Research Association, 1919.
Lua MLA (8ú heag.)Não informado. Bee World. International Bee Research Association, 1919.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.