VALENČIĆ ŠTEMBERGAR, Anja; ČOTAR KONRAD, Sonja. Medsebojna povezanost otrok v starostno homogenih in starostno kombiniranih skupinah. Journal of Elementary Education, [S. l.], v. 8, n. 3, p. 59–76, 2015. Disponível em: https://old.journals.um.si/index.php/education/article/view/407. Acesso em: 8 nov. 2025.