Cita APA (7th ed.)

Stillwell, J. (1980). Classical topology and combinatorial group theory. Springer-Verlag.

Cita Chicago (17th ed.)

Stillwell, John. Classical Topology and Combinatorial Group Theory. Nueva York: Springer-Verlag, 1980.

Cita MLA (9th ed.)

Stillwell, John. Classical Topology and Combinatorial Group Theory. Springer-Verlag, 1980.