Soelton, M., Y. Ramli, E. T. P. Saratian, and F. Rohman. “THE LEVEL OF MENTAL HEALTH OF THE ELDERLY IN THE CITY CLUSTER”. ICCD, Vol. 2, no. 1, Nov. 2019, pp. 300 -3, doi:10.33068/iccd.Vol2.Iss1.199.