APA (7th ed.) Zitazioa

Guelke, L. (1982). Historical understanding geography: An idealist approach. niv. Pr..

Chicago Style (17th ed.) Zitazioa

Guelke, Leonard. Historical Understanding Geography: An Idealist Approach. Cambridge: niv. Pr., 1982.

MLA (9th ed.) Zitazioa

Guelke, Leonard. Historical Understanding Geography: An Idealist Approach. niv. Pr., 1982.