APA (7th ed.) Zitazioa
Superior Seals Ltd. MarketLine Company Profile. Marketline.
Chicago Style (17th ed.) Zitazioa
Superior Seals Ltd. MarketLine Company Profile. Marketline.
MLA (9th ed.) Zitazioa
Superior Seals Ltd. MarketLine Company Profile. Marketline.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.