Yanti, S., and M. Jannah. “PENGARUH MIND CONTROL TRAINING TERHADAP MENTAL TOUGHNES PADA ATLET UKM BOLA BASKET UNIVERSITAS NEGERI SURABAYA”. Character Jurnal Penelitian Psikologi, Vol. 4, no. 1, Apr. 2017, pp. 1-6, https://ejournal.unesa.ac.id/index.php/character/article/view/42702.