Syafirah, Dina, et al. “Application of Elderly Nursing Care on Ny. H With Activity Intolerance Nursing Problems in Medical Diagnosis of Coronary Heart Disease”. IJoHVE: Indonesian Journal of Health Vocational Education, vol. 1, no. 1, Apr. 2022, pp. 9-19, doi:10.36720/ijohve.v1i1.437.