Gündoğdu, Serhat. “Difficult Questions of Preschoolers’ With Different Socio-Economic Conditions and Their Parents’ Answers”. Psycho-Educational Research Reviews 11, no. 3 (December 10, 2022): 553–566. Accessed March 19, 2024. https://perrjournal.com/index.php/perrjournal/article/view/433.