Cita APA (7th ed.)

Hilton, P. J. (1965). Homotopy theory and duality. Gordon and Breach.

Cita Chicago (17th ed.)

Hilton, Peter J. Homotopy Theory and Duality. Nueva York: Gordon and Breach, 1965.

Cita MLA (9th ed.)

Hilton, Peter J. Homotopy Theory and Duality. Gordon and Breach, 1965.

Atenció: Aquestes cites poden no estar 100% correctes.