Cita APA (7a ed.)

Pontri︠a︡gin, L. S., & Lehmer, E. Topological groups. Princeton University Press.

Cita Chicago Style (17a ed.)

Pontri︠a︡gin, L. S., y Emma Lehmer. Topological Groups. Princeton: Princeton University Press.

Cita MLA (9a ed.)

Pontri︠a︡gin, L. S., y Emma Lehmer. Topological Groups. Princeton University Press.