एपीए उद्धरण

Christensen, J. P. R. (1974). Topology and borel structure. North-Holland Publishing Company.

शिकागो स्टाइल उद्धरण

Christensen, J P R. Topology and Borel Structure. Amsterdam: North-Holland Publishing Company, 1974.

एमएलए उद्धरण

Christensen, J P R. Topology and Borel Structure. North-Holland Publishing Company, 1974.