APA (7th ed.) Zitazioa

(1940). Post-war housing problems / by O. E. W. Olsen.

Chicago Style (17th ed.) Zitazioa

Post-war Housing Problems / by O. E. W. Olsen. 1940.

MLA (9th ed.) Zitazioa

Post-war Housing Problems / by O. E. W. Olsen. 1940.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.