U. Nihayah and M. Zahir Luthfil Khakim, “Efikasi Diri Lanjut Usia di Rumah Pelayanan Sosial Lansia: Studi Kasus Penerapan Metode Mauidhoh Hasanah (Self-Efficacy of the Elderly in Elderly Social Service Home: A Case Study of Method Application Mauidhoh Hasanah)”, Happiness, vol. 9, no. 1, pp. 79–90, Jun. 2025.