APA (7th ed.) Zitazioa

Gabriel, R. H. (1929). The Lure of the frontiers (Idependence ed.). New Haven, Yale University Press.

Chicago Style (17th ed.) Zitazioa

Gabriel, Ralph Henry. The Lure of the Frontiers. Idependence ed. Toronto: New Haven, Yale University Press, 1929.

MLA (9th ed.) Zitazioa

Gabriel, Ralph Henry. The Lure of the Frontiers. Idependence ed. New Haven, Yale University Press, 1929.