Putri, Mila Ayu Octavianti, and Miftakhul Jannah. “PERBEDAAN KETANGGUHAN MENTAL ATLET PELAJAR LAKI-LAKI DAN PEREMPUAN”. Character Jurnal Penelitian Psikologi 9, no. 1 (January 31, 2022): 195. Accessed June 24, 2025. https://ejournal.unesa.ac.id/index.php/character/article/view/45021.