rian hardiana, Agustina A, Salim DM, Putra JP. Survei Tingkat Goal Setting dan Peak Performance pada Siswa Ekstrakurikuler Futsal SMP Negeri 4 Purwakarta . JEC [Internet]. 2026 Feb. 26 [cited 2026 Jul. 10];6(1):7-12. Available from: https://ejournal.indrainstitute.id/index.php/jec/article/view/1560