Hubungan Antara Mental Toughness dan Competitive Anxiety Atlet UKM Softball Universitas PGRI Adi Buana Surabaya. ADIRAGA [Internet]. 2020 Nov. 9 [cited 2026 Aug. 5];6(2):10-24. Available from: https://jurnal.unipasby.ac.id/adi_raga/article/view/2791