Zulkifli, Y. . S., R. Tahriani, D. . Jibriel, and Y. P. W. Swara. “Tinjauan Pustaka : Depresi Pada Lansia”. Jurnal Kesehatan Ilmiah Indonesia (Indonesian Health Scientific Journal), vol. 10, no. 2, Dec. 2015, doi:10.51933/health.v10i2.2244.