Fokidis, M. (2013). Helmut Middendorf: Observer ; collagen & drawings / [Editor:] Eleni Koroneou Gallery. Text: Marina Fokidis. Kerber Verlag.
Chicagoスタイル(17版)引用形式Fokidis, Marina. Helmut Middendorf: Observer ; Collagen & Drawings / [Editor:] Eleni Koroneou Gallery. Text: Marina Fokidis. Bielefeld ; Berlin: Kerber Verlag, 2013.
MLA(8版)引用形式Fokidis, Marina. Helmut Middendorf: Observer ; Collagen & Drawings / [Editor:] Eleni Koroneou Gallery. Text: Marina Fokidis. Kerber Verlag, 2013.
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