Cetic.br. (2024). Executive Summary - Survey on the Internet service provider sector in Brazil: ICT Providers 2020.
Chicago-referens (17:e uppl.)Cetic.br. Executive Summary - Survey on the Internet Service Provider Sector in Brazil: ICT Providers 2020. 2024.
MLA-referens (8:e uppl.)Cetic.br. Executive Summary - Survey on the Internet Service Provider Sector in Brazil: ICT Providers 2020. 2024.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.