Παραπομπή APA

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

Παραπομπή Chicago Style

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

Παραπομπή MLA

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