Não informado. (1979). European Journal of Science Education. Taylor & Francis.
Lua i Stíl Chicago (17ú heag.)Não informado. European Journal of Science Education. London: Taylor & Francis, 1979.
Lua MLA (8ú heag.)Não informado. European Journal of Science Education. Taylor & Francis, 1979.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.