Não informado. (1968). IBP inter-american news. National Committee, International Biological Programme.
Lua i Stíl Chicago (17ú heag.)Não informado. IBP Inter-american News. Washington: National Committee, International Biological Programme, 1968.
Lua MLA (8ú heag.)Não informado. IBP Inter-american News. National Committee, International Biological Programme, 1968.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.