APA (7th ed.) Zitazioa
Cole, J. (1983). Geography of world affairs (6th ed.). Butterworths.
Chicago Style (17th ed.) Zitazioa
Cole, J.P. Geography of World Affairs. 6th ed. London: Butterworths, 1983.
MLA (9th ed.) Zitazioa
Cole, J.P. Geography of World Affairs. 6th ed. Butterworths, 1983.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.