Sianturi, Kristiani, Rini Handayani, Putri Handayani, and Cut Alia Keumala Muda. 2021. “RISK FACTORS OF WORK STRESS ON FIREFIGHTERS”. Journal of Vocational Health Studies 5 (2):112-18. https://doi.org/10.20473/jvhs.V5.I2.2021.112-118.