“THE EFFECTIVENESS OF BRAIN GYM AND MEMORY GAMES NURSING THERAPY ON THE COGNITIVE ABILITIES OF THE ELDERLY AT THE ELDERLY POSYANDU, SIDOSERMO COMMUNITY HEALTH CENTER, SURABAYA”. 2026. ANJI: Applied Nursing Journal of Indonesia 3 (1): 20-32. https://e-journal.aipviki.org/index.php/anji/article/view/172.