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Lua i Stíl Chicago (17ú heag.)Levitsky, Steve, agus Tony Lapp. Solidarismo and Organized Labor.
Lua MLA (9ú heag.)Levitsky, Steve, agus Tony Lapp. Solidarismo and Organized Labor.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.