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Lua i Stíl Chicago (17ú heag.)Association, National Science Teachers. How to Do It Series. Washington, D.C: NSTA, 1969.
Lua MLA (9ú heag.)Association, National Science Teachers. How to Do It Series. NSTA, 1969.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.