(1990). Great books of the Western world: Vol.38 (2nd ed.). Encyclopaedia Britannica.
Chicago Style aipamenaGreat Books of the Western World: Vol.38. 2nd ed. Chicago: Encyclopaedia Britannica, 1990.
MLA aipamenaGreat Books of the Western World: Vol.38. 2nd ed. Encyclopaedia Britannica, 1990.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.