Anastácio, Zélia, y Susana Marinho. «Results of a Sex Education Program for 2nd and 3rd Cycle of Portuguese Basic Education Students». Revista INFAD de Psicología. International Journal of Developmental and Educational Psychology. 3, no. 1 (septiembre 27, 2014): 423–430. Accedido mayo 2, 2024. https://revista.infad.eu/index.php/IJODAEP/article/view/520.