M. Fauzan, “Effect of Stress and Leadership on Nurse Performance in General Hospital Simalungun Regency North Sumatera Province”, IJSBAR, vol. 35, no. 3, pp. 393–404, Sep. 2017, Accessed: Oct. 13, 2025. [Online]. Available: https://gssrr.org/JournalOfBasicAndApplied/article/view/7949