Ahmad Faris Dwinanda Saputra, Bambang Ferianto Tjahyo, and Tri Hadi Purnama. “Improving Physical Fitness With a Circuit Training Approach at State Vocational High School 1 Lamongan”. JOURNAL RESPECS (Research Physical Education and Sports) 5, no. 2 (July 10, 2023): 268–277. Accessed February 27, 2024. https://ejournal.unma.ac.id/index.php/respecs/article/view/5303.