Adji, F. R., Z. M. Sofro, and M. Hapsari. “The Effect of Beetroot Juice (<em>Beta Vulgaris L.</Em>) Supplementation on ṼO2max of Youth Soccer Athletes”. Journal of Public Health in Africa, vol. 13, no. s2, Dec. 2022, doi:10.4081/jphia.2022.2406.