Katane, Irēna, and Sandra Kreija-Gaikšte. “ECOLOGICAL APPROACH IN YOUTH EDUCATION IN THE FIELD OF NATIONAL DEFENCE”. Education Reform: Education Content Research and Implementation Problems 1 (July 1, 2022): 18–37. Accessed November 22, 2024. https://journals23.rta.lv/index.php/ER/article/view/6801.