KIEHLEBORN, A. Johann Heinrich Pestalozzi: My research on the course of nature in the development of the human race. Theatrum historiae, [S. l.], n. 1, p. 155–176, 2006. Disponível em: https://theatrum.upce.cz/index.php/theatrum/article/view/1760. Acesso em: 18 may. 2024.