APA (7th ed.) Zitazioa
The doubleday pictorial library. Doubleday.
Chicago Style (17th ed.) Zitazioa
The Doubleday Pictorial Library. New York: Doubleday.
MLA (9th ed.) Zitazioa
The Doubleday Pictorial Library. Doubleday.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.