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Lua i Stíl Chicago (17ú heag.)Mann, Michael. The Sources of Social Power: The Rise of Classes and Nation-states,1760-1914. Cambridge: Cambridge Univ., 1993.
Lua MLA (9ú heag.)Mann, Michael. The Sources of Social Power: The Rise of Classes and Nation-states,1760-1914. Cambridge Univ., 1993.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.