APA (7th ed.) Citation

Aleksandrov, P. S., & Hopf, H. (1965). Topologie. Chelsea Publ. Co.

Chicago Style (17th ed.) Citation

Aleksandrov, Pavel S., and Heinz Hopf. Topologie. Bronx, New York: Chelsea Publ. Co, 1965.

MLA (9th ed.) Citation

Aleksandrov, Pavel S., and Heinz Hopf. Topologie. Chelsea Publ. Co, 1965.