Cita APA (7th ed.)

Horblit, M. (1947). Plane geometry problems. Barnes & Noble.

Cita Chicago (17th ed.)

Horblit, M. Plane Geometry Problems. New York: Barnes & Noble, 1947.

Cita MLA (9th ed.)

Horblit, M. Plane Geometry Problems. Barnes & Noble, 1947.