APA aipamena

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

Chicago Style aipamena

Hu, S. T. Homotopy Theory. New York: Academic Press, 1959.

MLA aipamena

Hu, S. T. Homotopy Theory. Academic Press, 1959.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.