APA (7th ed.) Zitazioa
Buchanan, O. (2008). Spring: Poems. University of Illinois Press.
Chicago Style (17th ed.) Zitazioa
Buchanan, Oni. Spring: Poems. Urbana: University of Illinois Press, 2008.
MLA (9th ed.) Zitazioa
Buchanan, Oni. Spring: Poems. University of Illinois Press, 2008.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.