Ponente, N. (1960). Klee: Biographical and critical study. Skira, [distributed by World Pub. Co., Cleveland.
Chicago-referens (17:e uppl.)Ponente, Nello. Klee: Biographical and Critical Study. [Lausanne]: Skira, [distributed by World Pub. Co., Cleveland, 1960.
MLA-referens (9:e uppl.)Ponente, Nello. Klee: Biographical and Critical Study. Skira, [distributed by World Pub. Co., Cleveland, 1960.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.