Cetic.br. (2020). Executive Summary - Survey on the use of information and communication technologies in Brazilian schools: ICT in Education 2019.
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 2019. 2020.
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 2019. 2020.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.