APA (7th ed.) Zitazioa
French idioms simplified. Hugo's Language Institute.
Chicago Style (17th ed.) Zitazioa
French Idioms Simplified. London: Hugo's Language Institute.
MLA (9th ed.) Zitazioa
French Idioms Simplified. Hugo's Language Institute.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.