APA aipamena

Richardson,Harry W. (1978). Urban economics. Dryden Press.

Chicago Style aipamena

Richardson,Harry W. Urban Economics. Hinsdale: Dryden Press, 1978.

MLA aipamena

Richardson,Harry W. Urban Economics. Dryden Press, 1978.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.