Cita APA (7th ed.)

Leff, L. S. (1997). Barron's geometry the easy way (Third edition.). Barron's Educational Series.

Cita Chicago (17th ed.)

Leff, Lawrence S. Barron's Geometry the Easy Way. Third edition. New York: Barron's Educational Series, 1997.

Cita MLA (9th ed.)

Leff, Lawrence S. Barron's Geometry the Easy Way. Third edition. Barron's Educational Series, 1997.