APA (7th ed.) Citation

Bold, B. (1969). Famous problems of geometry. Dover Publications, Inc.

Chicago Style (17th ed.) Citation

Bold, Benjamin. Famous Problems of Geometry. New York: Dover Publications, Inc, 1969.

MLA (8th ed.) Citation

Bold, Benjamin. Famous Problems of Geometry. Dover Publications, Inc, 1969.

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