Molina Calle, Carmen Victoria, and Andrés Alexis Ramírez Coronel. “Psychometric Properties of the Geriatric Depression Scale: Systematic Review ”. ConcienciaDigital 6, no. 1.1 (February 6, 2023): 89-104. Accessed May 1, 2025. https://www.cienciadigital.org/revistacienciadigital2/index.php/ConcienciaDigital/article/view/2479.