Cita APA (7th ed.)

O'Daffer, P. G., & Clemens, S. R. (1992). Geometry: An investigative approach (Second edition.). Addison-Wesley Publishing Company.

Cita Chicago (17th ed.)

O'Daffer, Phares G., i Stanley R. Clemens. Geometry: An Investigative Approach. Second edition. Reading, Massachusetts: Addison-Wesley Publishing Company, 1992.

Cita MLA (9th ed.)

O'Daffer, Phares G., i Stanley R. Clemens. Geometry: An Investigative Approach. Second edition. Addison-Wesley Publishing Company, 1992.