“The Relationship Between Self-Efficacy and Subjective Well-Being Among Older Adult”. Jurnal Keperawatan Florence Nightingale 9, no. 1 (June 28, 2026): 112–118. Accessed July 5, 2026. https://ejournal.stikstellamarismks.ac.id/index.php/JKFN/article/view/484.