FLIERMAN, Diny; VALKENIER, Harry. Discovering The Ontdekplek. Design & Technology Teaching, [S.l.], v. 28, n. 1, dec. 2009. ISSN 0958-3017. Available at: <https://www.ariadne.ac.uk/DTT/article/view/1451>. Date accessed: 02 june 2023.