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Lua i Stíl Chicago (17ú heag.)Alexandrice, Virgina. GLOSSARY of Geology. American Geosciences Institute, 2011.
Lua MLA (9ú heag.)Alexandrice, Virgina. GLOSSARY of Geology. American Geosciences Institute, 2011.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.