Fernandes-Eloi, J., M. D. F. Dias, and T. R. T. Nunes. “Perception of Quality of Life in Elderly: Integrative Literature Review”. Revista Kairós-Gerontologia, vol. 21, no. 4, Dec. 2018, pp. 389-07, doi:10.23925/2176-901X.2018v21i4p389-407.