Iancu, Bianca, and Andrei Ion. “Grit’s Incremental Validity over Non-Cognitive Predictors of Job-Relevant Outcomes”. Psihologia Resurselor Umane 21, no. 1 (May 28, 2023). Accessed October 26, 2025. https://www.hrp-journal.com/index.php/pru/article/view/522.