Beckmann, L. The causes lie in the future. Joseph Beuys : Mapping the Legacy.
Čikaški stil citiranja (17. izdanje)Beckmann, Lukas. "The Causes Lie in the Future." Joseph Beuys : Mapping the Legacy .
MLA način citiranja (8. izdanje)Beckmann, Lukas. "The Causes Lie in the Future." Joseph Beuys : Mapping the Legacy, .
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