RETTER, Hein. How William H. Kilpatrick’s Project Method Came to Germany: “Progressive Education” Against the Background of American-German Relations Before and After 1933. International Dialogues on Education Journal, Seattle, Washington U.S.A., v. 6, n. 1, 2019. DOI: 10.53308/ide.v6i1.52. Disponível em: https://www.idejournal.org/index.php/ide/article/view/52. Acesso em: 19 may. 2026.