APA (7th ed.) Zitazioa
Brunner, B. (2012). Inventing the Christmas tree. Yale University Press.
Chicago Style (17th ed.) Zitazioa
Brunner, Bernd. Inventing the Christmas Tree. New Haven: Yale University Press, 2012.
MLA (9th ed.) Zitazioa
Brunner, Bernd. Inventing the Christmas Tree. Yale University Press, 2012.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.