APA (7th ed.) Zitazioa

(1976). Spatial perspectives on problems and: Policies. Wiley.

Chicago Style (17th ed.) Zitazioa

Spatial Perspectives on Problems and: Policies. London: Wiley, 1976.

MLA (9th ed.) Zitazioa

Spatial Perspectives on Problems and: Policies. Wiley, 1976.