Spanier, E. H. (1966). Algebraic topology. McGraw-Hill.
Cita Chicago (17th ed.)Spanier, Edwin H. Algebraic Topology. New York,: McGraw-Hill, 1966.
Cita MLA (9th ed.)Spanier, Edwin H. Algebraic Topology. McGraw-Hill, 1966.
Atenció: Aquestes cites poden no estar 100% correctes.