एपीए उद्धरण

Edwards, D. A., & Hastings, H. M. (1976). Cech and Steenrod Homotopy theories with applications to geometric topology. Springer-Verlag.

शिकागो स्टाइल उद्धरण

Edwards, David A., और Harold M. Hastings. Cech and Steenrod Homotopy Theories with Applications to Geometric Topology. New York: Springer-Verlag, 1976.

एमएलए उद्धरण

Edwards, David A., और Harold M. Hastings. Cech and Steenrod Homotopy Theories with Applications to Geometric Topology. Springer-Verlag, 1976.