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Lua i Stíl Chicago (17ú heag.)Farmer, Ian William. Engineering Properties of Rocks. London: Spon, 1968.
Lua MLA (9ú heag.)Farmer, Ian William. Engineering Properties of Rocks. Spon, 1968.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.