MARIAN, Senkiv. Geo-ecological competence formation for future tourism services specialists in the sustainable development movement. Professional Pedagogics, Kyiv, n. 15, p. 88–94, 2018. DOI: 10.32835/2223-5752.2018.15.88-94. Disponível em: https://jrnls.ivet.edu.ua/1/article/view/74. Acesso em: 21 mar. 2026.