Cita APA (7th ed.)

(2011). Ultrafilters and topologies on groups Yevhen G. Zelenyuk. [electronic resource].

Cita Chicago (17th ed.)

Ultrafilters and Topologies on Groups Yevhen G. Zelenyuk. [electronic Resource]. 2011.

Cita MLA (9th ed.)

Ultrafilters and Topologies on Groups Yevhen G. Zelenyuk. [electronic Resource]. 2011.

Atenció: Aquestes cites poden no estar 100% correctes.