Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

Hu, Sze-Tsen. Homotopy Theory. New York: Academic Press, 1959.

Cita MLA (8a ed.)

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