APA (7th ed.) Zitazioa
Allen, G. W. (1972). Carl Sandburg. University of Minnesota Press.
Chicago Style (17th ed.) Zitazioa
Allen, Gay Wilson. Carl Sandburg. Minneapolis, MN: University of Minnesota Press, 1972.
MLA (9th ed.) Zitazioa
Allen, Gay Wilson. Carl Sandburg. University of Minnesota Press, 1972.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.