Layuk, S., T. Martiana, G. B. H. Alow, D. Katiandagho, C. Pomalango, R. K. Afiyah, and S. N. Hasina. “Physical Environment and Work Fatigue Among Ship Engine Room Crew”. International Journal of Health Sciences, vol. 6, no. 3, Oct. 2022, pp. 1556-64, doi:10.53730/ijhs.v6n3.13248.