I. Danju și D. Islek, „Determination of the Objectives of Global Citizenship Education Curriculum According to Delphi Technique”, rcis, vol. 63, pp. 70–84, dec. 2018, Data accesării: nov. 07, 2026. Disponibil la: https://www.rcis.ro/journal/article/view/2510-determination-of-the-objectives-of-global-citizenship