APA (7th ed.) Zitazioa
Boland, C. (1961). They all discovered America. Permabook.
Chicago Style (17th ed.) Zitazioa
Boland, Charles. They All Discovered America. New York: Permabook, 1961.
MLA (9th ed.) Zitazioa
Boland, Charles. They All Discovered America. Permabook, 1961.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.