Panjaitan , Muhammad Makmur, Kamarudin, and Zulrafli. “Tingkat Kesegaran Jasmani Siswa Ekstrakurikuler Bolavoli SMP Nengeri 35 Pekanbaru”. Integrated Sport Journal (ISJ) 3, no. 2 (May 30, 2025): 123–131. Accessed July 17, 2025. https://www.ejournal.indrainstitute.id/index.php/isj/article/view/1287.