Faisal, T. I.; Khaira, N.; Veri, N.; Magfirah, M.; Dewita, D.; Alchalidi, A.; Sari, Y. The Effect of Walking Exercise and Consumption of Steeping Chamomile Flowers (Matricaria Recutita) on Depression in the Elderly in Langsa City. Open Access Maced J Med Sci 2021, 9, 626-631.