TORKAR, Gregor, 2016, Secondary school studentsʼ environmental concerns and attitudes toward forest ecosystem services: implications for biodiversity education. [na spletu]. 2016. Vol. 11, p. 11019–11031. [Dostopano 16 junij 2025]. Pridobljeno s: https://repozitorij.uni-lj.si/IzpisGradiva.php?lang=slv&id=87732