KUNAVER, J. Didaktika geografije včeraj, danes in jutri. Dela, [S. l.], n. 6, p. 40–51, 1989. DOI: 10.4312/dela.6.40-51. Disponível em: https://journals.uni-lj.si/Dela/article/view/1154. Acesso em: 27 mar. 2023.