PERRIN, Christophe. Some Notes on the Phenomenon of Solitude. Paedagogia Christiana, [S. l.], v. 45, n. 1, p. 11–22, 2020. DOI: 10.12775/PCh.2020.001. Disponível em: https://apcz.umk.pl/PCh/article/view/PCh.2020.001. Acesso em: 3 jul. 2025.