S. PETIK, K.; KÉZDY, A.; KOCSIS, F. Learning Projects and Their Background Motivations: Relationships with Mental Health in Midlife and Later Life. European Journal of Mental Health, [S. l.], p. 187–211, 2013. Disponível em: https://ejmh.semmelweis.hu/test/index.php/ejmh/article/view/102. Acesso em: 20 sep. 2024.