Castillo-Tigua, M., S. Montes-Muñoz, and O. Zambrano-Quinde. “Cognitive Evaluation and Active Aging of Retired Workers: Investigation Article”. Revista Científica Y Arbitrada De Psicología NUNA YACHAY - ISSN: 2697-3588., vol. 3, no. 6, July 2020, pp. 21-32, https://publicacionescd.uleam.edu.ec/index.php/nuna-yachay/article/view/20.