Cita APA (7th ed.)

Hilton, P. J. (1953). An introduction to homotopy theory. University Press.

Cita Chicago (17th ed.)

Hilton, Peter John. An Introduction to Homotopy Theory. Cambridge: University Press, 1953.

Cita MLA (8th ed.)

Hilton, Peter John. An Introduction to Homotopy Theory. University Press, 1953.