Hakim, A. L., and L. Sulistyorini. “RELATIONSHIP OF ENVIRONMENTAL PHYSICAL FACTORS AND LIQUID INTAKE WITH HYDRATION STATUS OF LONTONG HOME INDUSTRY SURABAYA”. The Indonesian Journal of Public Health, vol. 16, no. 1, Apr. 2021, pp. 79-88, doi:10.20473/ijph.v16i1.2021.79-88.