APA (7 वां संस्करण) प्रशस्ति पत्र

Ponente, N. (1960). Klee: Biographical and critical study. Skira, [distributed by World Pub. Co., Cleveland.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Ponente, Nello. Klee: Biographical and Critical Study. [Lausanne]: Skira, [distributed by World Pub. Co., Cleveland, 1960.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

Ponente, Nello. Klee: Biographical and Critical Study. Skira, [distributed by World Pub. Co., Cleveland, 1960.