STEEN, L. A. (1978). Counterexamples in topology. Springer-Verlag.
Cita Chicago (17th ed.)STEEN, Lynn Arthur. Counterexamples in Topology. New york: Springer-Verlag, 1978.
Cita MLA (9th ed.)STEEN, Lynn Arthur. Counterexamples in Topology. Springer-Verlag, 1978.
Atenció: Aquestes cites poden no estar 100% correctes.