(1985). Encyclopaedia Britannica (15th.). The University of Chicago.
Chicago Style aipamenaEncyclopaedia Britannica. 15th. Chicago: The University of Chicago, 1985.
MLA aipamenaEncyclopaedia Britannica. 15th. The University of Chicago, 1985.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.