APA način citiranja

Pontriagin, L. S. 1., & Lehmer, E. (1939). Topological groups. Princeton : London: Princeton University Press; H. Milford, Oxford university press.

Čikaški stil citiranja

Pontriagin, L. S. 1908-, i Emma Lehmer. Topological Groups. Princeton : London: Princeton University Press; H. Milford, Oxford university press, 1939.

MLA način citiranja

Pontriagin, L. S. 1908-, i Emma Lehmer. Topological Groups. Princeton : London: Princeton University Press; H. Milford, Oxford university press, 1939.