APA (7th ed.) Citation

Aleksandrov, P. S., & Hopf, H. Topologie (Repr.). Chelsea.

Chicago Style (17th ed.) Citation

Aleksandrov, Pavel S., and Heinz Hopf. Topologie. Repr. Bronx, NY: Chelsea.

MLA (9th ed.) Citation

Aleksandrov, Pavel S., and Heinz Hopf. Topologie. Repr. Chelsea.

Warning: These citations may not always be 100% accurate.