ZAVARCE ARMAS, Pura. Optimism: Healthy Character Trait And Protective Factor. In: Happiness and human well-being:: Insights from reflection, research and intervention in Latin America. Sociales, Artes y HumanidadesColombia,CO: Sello Editorial UNAD,2024. p. 27–51. DOI: 10.22490/UNAD.9786287786240.1. Disponível em: https://libros.unad.edu.co/index.php/selloeditorial/catalog/book/344/chapter/2023. Acesso em: 25 sep. 2025.