ISO 3166-2:IT ni akoole ninu ISO 3166-2, apa opagun ISO 3166 ti International Organization for Standardization (ISO) tejadesiwe to setumo awon amioro fun oruko awon ipinsabe koko awon orile-ede. "ISO 3166 Country Codes". ISO. 2017-12-22. Retrieved 2018-05-22.