Ilmawan, Anggo Widcaksana, Ria Lumintuarso, Aulia Gusdernawati, Fitri Agung Nanda, and Muhammad Tafwidh Alzaid. “Caffeine Supplementation in the Sport of Futsal: How Does It Impact athletes’ Endurance and Speed?”. Journal Sport Area 8, no. 1 (February 23, 2023): 62–67. Accessed April 26, 2024. https://journal.uir.ac.id/index.php/JSP/article/view/9897.