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Lua i Stíl Chicago (17ú heag.)Tilly, Charles. Coercion, Capital and European States, A.d. 990 - 1992. Malden: Blackwell, 2006.
Lua MLA (9ú heag.)Tilly, Charles. Coercion, Capital and European States, A.d. 990 - 1992. Blackwell, 2006.
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