The history of Fertility Awareness Methods. Kwartalnik Naukowy Fides et Ratio, [S. l.], v. 51, n. 3, p. 9–19, 2022. DOI: 10.34766/fetr.v3i51.1093. Disponível em: https://fidesetratio.com.pl/ojs/index.php/FetR/article/view/1093. Acesso em: 19 jun. 2025.