APA (7th ed.) Citation

Hu, S. (1959). Homotopy theory. Acad. Press.

Chicago Style (17th ed.) Citation

Hu, Sze-Tsen. Homotopy Theory. New York [u.a.]: Acad. Press, 1959.

MLA (9th ed.) Citation

Hu, Sze-Tsen. Homotopy Theory. Acad. Press, 1959.