JOVAIŠA, Leonas. The Development of Self-Preservation. Acta Paedagogica Vilnensia, [S. l.], v. 9, p. 228–234, 2002. DOI: 10.15388/ActPaed.2002.09.9557. Disponível em: https://test.zurnalai.vu.lt/acta-paedagogica-vilnensia/article/view/9557. Acesso em: 25 oct. 2025.