Apriantono, Tommy, Fahmi Hasan, Samsul Bahri, Irianti Bahana, and Raden Aswin Rahadian. “Level of Nutrition Knowledge Personal Trainer in West Java”. Jurnal SPORTIF : Jurnal Penelitian Pembelajaran 7, no. 3 (December 31, 2021): 454 - 466. Accessed April 19, 2024. https://ojs.unpkediri.ac.id/index.php/pjk/article/view/16812.