Cita APA (7th ed.)

Lockwood, J. R., & Runion, G. E. (1978). Deductive systems: Finite and non-euclidean geometries. National Council of Teachers of Mathematics.

Cita Chicago (17th ed.)

Lockwood, James R., i G E. Runion. Deductive Systems: Finite and Non-euclidean Geometries. Reston, VA: National Council of Teachers of Mathematics, 1978.

Cita MLA (9th ed.)

Lockwood, James R., i G E. Runion. Deductive Systems: Finite and Non-euclidean Geometries. National Council of Teachers of Mathematics, 1978.