Oktay A, Doğan H, Özcan Z Çiğdem, Dönmez Özlem, Özdemir H. Investigation of academic achievement, self-efficacy and psychological resilience of sixth grade students starting primary school at different ages. PEGEGOG [Internet]. 2021 Apr. 23 [cited 2025 Aug. 2];11(1):187-216. Available from: https://pegegog.net/index.php/pegegog/article/view/1085