APA (7th ed.) Zitazioa

McCombs, D. (2000). Ultima thule. Yale University Press.

Chicago Style (17th ed.) Zitazioa

McCombs, Davis. Ultima Thule. New Haven: Yale University Press, 2000.

MLA (9th ed.) Zitazioa

McCombs, Davis. Ultima Thule. Yale University Press, 2000.