APA (7th ed.) Citation

Clemens, C. H. (2019). Two-dimensional geometries: A problem-solving approach. American Mathematical Society.

Chicago Style (17th ed.) Citation

Clemens, Charles Herbert. Two-dimensional Geometries: A Problem-solving Approach. Providence, Rhode Island, USA: American Mathematical Society, 2019.

MLA (9th ed.) Citation

Clemens, Charles Herbert. Two-dimensional Geometries: A Problem-solving Approach. American Mathematical Society, 2019.