Cita APA (7th ed.)

Hoffman, P., Piccinini, R., & Sjerve, D. (1978). Algebraic topology. Springer-Verlag.

Cita Chicago (17th ed.)

Hoffman, Peter, Renzo Piccinini, i Denis Sjerve. Algebraic Topology. Berlín: Springer-Verlag, 1978.

Cita MLA (9th ed.)

Hoffman, Peter, et al. Algebraic Topology. Springer-Verlag, 1978.