Não informado. (1980). Ecology Abstracts. Cambridge Scientific Abstracts.
Lua i Stíl Chicago (17ú heag.)Não informado. Ecology Abstracts. Bethesda, Md: Cambridge Scientific Abstracts, 1980.
Lua MLA (8ú heag.)Não informado. Ecology Abstracts. Cambridge Scientific Abstracts, 1980.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.