Cetic.br. (2024). Executive Summary - Survey on the Internet service provider sector in Brazil: ICT Providers 2020.
芝加哥风格引文Cetic.br. Executive Summary - Survey on the Internet Service Provider Sector in Brazil: ICT Providers 2020. 2024.
MLA引文Cetic.br. Executive Summary - Survey on the Internet Service Provider Sector in Brazil: ICT Providers 2020. 2024.
警告：这些引文格式不一定是100％准确.