In I.P. Samuelsson, & Y. Kaga (Eds.). The contribution of early childhood education to a sustainable society (pp. 18-24). UNESCO. https://eprints.qut.edu.au/14695/1/14695.pdf
Social Studies and the Young Learner, 20(2), 30–32. https://www.socialstudies.org/social-studies-and-young-learner/20/2/developmentally-appropriate-geography