Beuys, J., Rose, B., Koepplin, D., & Temkin, A. (1993). Thinking is form: The drawings of Joseph Beuys / Ann Temkin and Bernice Rose with a contribution by Dieter Koepplin. Philadelphia Museum of Art [u.a.].
Lua i Stíl Chicago (17ú heag.)Beuys, Joseph, Bernice Rose, Dieter Koepplin, agus Ann Temkin. Thinking Is Form: The Drawings of Joseph Beuys / Ann Temkin and Bernice Rose with a Contribution by Dieter Koepplin. Philadelphia, Pa.: Philadelphia Museum of Art [u.a.], 1993.
Lua MLA (8ú heag.)Beuys, Joseph, et al. Thinking Is Form: The Drawings of Joseph Beuys / Ann Temkin and Bernice Rose with a Contribution by Dieter Koepplin. Philadelphia Museum of Art [u.a.], 1993.
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