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Lua i Stíl Chicago (17ú heag.)1983: Yearbook of Science and the Future. Chicago: Encyclopaedia Britannica, 1982.
Lua MLA (8ú heag.)1983: Yearbook of Science and the Future. Encyclopaedia Britannica, 1982.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.