Iles, C. (2008). Sigmar Polke: Lens paintings.
Lua i Stíl Chicago (17ú heag.)Iles, Chrissie. Sigmar Polke: Lens Paintings. Chicago, 2008.
Lua MLA (8ú heag.)Iles, Chrissie. Sigmar Polke: Lens Paintings. 2008.
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