Abeles, F. F., & Moktefi, A. (2011). Hugh MacColl and Lewis Carroll: Crosscurrents in geometry and logic.
Cita Chicago (17th ed.)Abeles, Francine F., i Amirouche Moktefi. Hugh MacColl and Lewis Carroll: Crosscurrents in Geometry and Logic. 2011.
Cita MLA (8th ed.)Abeles, Francine F., i Amirouche Moktefi. Hugh MacColl and Lewis Carroll: Crosscurrents in Geometry and Logic. 2011.
Atenció: Aquestes cites poden no estar 100% correctes.