Cita APA (7a ed.)

Kelly, P. J., & Ladd, N. E. (1965). Geometry. Scott, Foresman and Company.

Cita Chicago Style (17a ed.)

Kelly, P. J., y Norman E. Ladd. Geometry. Chicago [etc.]: Scott, Foresman and Company, 1965.

Cita MLA (9a ed.)

Kelly, P. J., y Norman E. Ladd. Geometry. Scott, Foresman and Company, 1965.