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Lua i Stíl Chicago (17ú heag.)Beekman, Klaus. "The Inevitability of Argumentative Criticism: Theo Van Doesburg and the Constructive Review / Klaus Beekman." Avant-Garde and Criticism.(2007) .
Lua MLA (8ú heag.)Beekman, Klaus. "The Inevitability of Argumentative Criticism: Theo Van Doesburg and the Constructive Review / Klaus Beekman." Avant-Garde and Criticism.(2007), .
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