LumbaAndreas J. F. “Peningkatan Kualitas Latihan Daya Tahan Atlet Tinju”. Prosiding Seminar Nasional IPTEK Olahraga (SENALOG) 1, no. 1 (November 21, 2018): KEP-OR 1. Accessed May 4, 2024. https://ejournal.unibabwi.ac.id/index.php/semnassenalog/article/view/166.