Croom,, F. H. (1978). Basic concepts of algebraic topology. Springer.
Dyfyniad Arddull ChicagoCroom,, Fred H. Basic Concepts of Algebraic Topology. Berlin: Springer, 1978.
Dyfyniad MLACroom,, Fred H. Basic Concepts of Algebraic Topology. Springer, 1978.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.