An analysis of Indonesian student-level boxing athletes: What Effect Does Competition Anxiety Have on Self-Efficacy? von Saniah, Saniah, Sukamti, Endang Rini, Chaeroni, Ahmad, Prayoga, Hegen Dadang, Prabowo, Trisnar Adi, Suganda, Mikkey Anggara, Suryadi, Didi, Abdullah, Nagoor Meera Bin, Gogoi, Hemantajit, Poralan, Porferia S, Maulana, Ahmad, Habibie, Muhammad, Amalia, Bonita, Kasanrawali, Andi, Abdhi, Muhammad Irwansyah

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