APA استشهاد

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

استشهاد بنمط شيكاغو

Croom,, Fred H. Basic Concepts of Algebraic Topology. Berlin: Springer, 1978.

MLA استشهاد

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