Cetic.br. (2021). Executive Summary - Survey on the use of information and communication technologies in Brazilian Schools: ICT in Education 2020.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Cetic.br. Executive Summary - Survey on the Use of Information and Communication Technologies in Brazilian Schools: ICT in Education 2020. 2021.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Cetic.br. Executive Summary - Survey on the Use of Information and Communication Technologies in Brazilian Schools: ICT in Education 2020. 2021.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.