Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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