Cita APA (7th ed.)

Croom, F. H. (1978). Basic concepts of algebraic topology. Springer-Verlag.

Cita Chicago (17th ed.)

Croom, Fred H. Basic Concepts of Algebraic Topology. Nueva York: Springer-Verlag, 1978.

Cita MLA (9th ed.)

Croom, Fred H. Basic Concepts of Algebraic Topology. Springer-Verlag, 1978.