Kudielka, R., & Riley, B. (2002). Paul Klee: The nature of creation ; works 1914 - 1940 / Robert Kudielka. Hayward Gallery.
Chicago-Zitierstil (17. Ausg.)Kudielka, Robert, und Bridget Riley. Paul Klee: The Nature of Creation ; Works 1914 - 1940 / Robert Kudielka. London: Hayward Gallery, 2002.
MLA-Zitierstil (8. Ausg.)Kudielka, Robert, und Bridget Riley. Paul Klee: The Nature of Creation ; Works 1914 - 1940 / Robert Kudielka. Hayward Gallery, 2002.
警告：這些引文格式不一定是100％准確.