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Lua i Stíl Chicago (17ú heag.)Welding Symbols. Canoga Park, CA: Builder's Book, Inc., 2012.
Lua MLA (9ú heag.)Welding Symbols. Builder's Book, Inc., 2012.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.