Παραπομπή σε μορφή APA (7η εκδ.)

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

Παραπομπή σε μορφή Chicago (17η εκδ.)

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

Παραπομπή σε μορφή MLA (9th εκδ.)

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