Tomaszek K, Muchacka-Cymerman A, Adamczyk M. Believing in Yourself Matters! The Impact of Classroom Gratitude Week Intervention on Self-Regulation: The Role of Self-Esteem and Self-Effectiveness: An sich selbst zu glauben, ist wichtig! . PBE [Internet]. 2025 May 19 [cited 2025 May 24];2(47):27-4. Available from: https://apcz.umk.pl/PBE/article/view/48264