APA استشهاد

Calter, P. A. (2008). Squaring the circle: Geometry in art and architecture. Key college pub.

استشهاد بنمط شيكاغو

Calter, Paul A. Squaring the Circle: Geometry in Art and Architecture. New York: Key college pub, 2008.

MLA استشهاد

Calter, Paul A. Squaring the Circle: Geometry in Art and Architecture. Key college pub, 2008.