Okviasanti, F., S. T. Putra, A. Bakar, and A. yusuf. “EFFECTS OF DHIKR ON SPIRITUALITY AND CORTISOL LEVELS AMONG PATIENTS WITH HEART FAILURE: A PILOT STUDY”. Journal of Vocational Nursing, vol. 4, no. 1, May 2023, pp. 82-86, doi:10.20473/jovin.v4i1.45327.