Gisrianti, R. S., V. Y. Dewi, and E. Sahiratmadja. “Knowledge about Sources and Benefits of Vitamin D Among High School Students in Bandung, Indonesia”. Public Health and Preventive Medicine Archive, vol. 9, no. 2, Dec. 2021, pp. 80-84, doi:10.15562/phpma.v9i2.384.