Nurliani, and Hasbi Asyhari. “Efficacy Of Apples As A Supplement In Boosting The Lung Capacity Of Aerobic Athletes”. Musamus Journal of Physical Education and Sport (MJPES), Vol. 6, no. 4, Oct. 2024, pp. 534-9, https://ejournal.unmus.ac.id/index.php/physical/article/view/6414.