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Lua i Stíl Chicago (17ú heag.)Cetic.br. Executive Summary - Survey on the Internet Service Provider Sector in Brazil: ICT Providers 2020. 2021.
Lua MLA (9ú heag.)Cetic.br. Executive Summary - Survey on the Internet Service Provider Sector in Brazil: ICT Providers 2020. 2021.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.