APA (7th ed.) Citation

Munari, B. (1970). The discovery of the circle. Wittenborn.

Chicago Style (17th ed.) Citation

Munari, Bruno. The Discovery of the Circle. New York: Wittenborn, 1970.

MLA (9th ed.) Citation

Munari, Bruno. The Discovery of the Circle. Wittenborn, 1970.

Warning: These citations may not always be 100% accurate.