APA (7th ed.) Zitazioa
Westerman, G. (2013). Follow the blackbirds. Michigan State University Press.
Chicago Style (17th ed.) Zitazioa
Westerman, Gwen. Follow the Blackbirds. East Lansing: Michigan State University Press, 2013.
MLA (9th ed.) Zitazioa
Westerman, Gwen. Follow the Blackbirds. Michigan State University Press, 2013.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.