Beckmann, L. The causes lie in the future. Joseph Beuys : Mapping the Legacy.
Cita Chicago (17th ed.)Beckmann, Lukas. "The Causes Lie in the Future." Joseph Beuys : Mapping the Legacy .
Cita MLA (8th ed.)Beckmann, Lukas. "The Causes Lie in the Future." Joseph Beuys : Mapping the Legacy, .
Atenció: Aquestes cites poden no estar 100% correctes.