Pradana, Anung Ahadi, Junaiti Sahar, and Henny Permatasari. “Health Education for the Elderly to Prevent Depression Problems During a Pandemic Through Android Application”. STRADA : Jurnal Ilmiah Kesehatan 10, no. 1 (May 30, 2021): 1380–1388. Accessed September 22, 2025. https://sjik.org/index.php/sjik/article/view/699.