एपीए उद्धरण

Kamps, K. H., & Porter, T. 1. (1997). Abstract homotopy and simple homotopy theory. Singapore ; River Edge, N.J.: World Scientific.

शिकागो स्टाइल उद्धरण

Kamps, Klaus Heiner., और T. 1947- Porter. Abstract Homotopy and Simple Homotopy Theory. Singapore ; River Edge, N.J.: World Scientific, 1997.

एमएलए उद्धरण

Kamps, Klaus Heiner., और T. 1947- Porter. Abstract Homotopy and Simple Homotopy Theory. Singapore ; River Edge, N.J.: World Scientific, 1997.