Siekmann, A. (2004). What You Buy Is Your Problem: Dierk Schmidt. Kasseler Kunstverein.
Chicago Style (17. basım) AtıfSiekmann, Andreas. What You Buy Is Your Problem: Dierk Schmidt. Kassel: Kasseler Kunstverein, 2004.
MLA (8th ed.) AtıfSiekmann, Andreas. What You Buy Is Your Problem: Dierk Schmidt. Kasseler Kunstverein, 2004.
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