Clark, J. Spencer. “The Development of Civic Education in the United States, 1880-1930: Continuity and Or Change (Bilingual Edition: English Portuguese)”. Cadernos de História da Educação 15, no. 1 (junho 9, 2016): 40–107. Acessado dezembro 6, 2025. https://seer.ufu.br/index.php/che/article/view/34628.