Hopfengart, C. (2006). Paul Klee: Handpuppen. Hatje Cantz.
Chicagoスタイル(17版)引用形式Hopfengart, Christine. Paul Klee: Handpuppen. Ostfildern: Hatje Cantz, 2006.
MLA(8版)引用形式Hopfengart, Christine. Paul Klee: Handpuppen. Hatje Cantz, 2006.
警告: この引用は必ずしも正確ではありません.