Cita APA (7th ed.)
Henle, M. A Combinatorial Introduction to Topology. Dover.
Cita Chicago (17th ed.)
Henle, Michael. A Combinatorial Introduction to Topology. Nueva York, EUA: Dover.
Cita MLA (9th ed.)
Henle, Michael. A Combinatorial Introduction to Topology. Dover.
Atenció: Aquestes cites poden no estar 100% correctes.