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Lua i Stíl Chicago (17ú heag.)Popov, Egor Paul. Mechanics of Materials. New Delhi : Prentice Hall Of India Limited, 1969.
Lua MLA (9ú heag.)Popov, Egor Paul. Mechanics of Materials. 1969.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.