APA (7th ed.) Zitazioa

Isard, W., & Cumberland, J. (1960). Regional Economic Pianning. Techniques of Analysis for less developed areas: наукове видання.

Chicago Style (17th ed.) Zitazioa

Isard, Walter, eta JohnH Cumberland. Regional Economic Pianning. Techniques of Analysis for Less Developed Areas: наукове видання. 1960.

MLA (9th ed.) Zitazioa

Isard, Walter, eta JohnH Cumberland. Regional Economic Pianning. Techniques of Analysis for Less Developed Areas: наукове видання. 1960.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.