Goria, S., & 		Papadopoulou, M.
(2017).
 Icons versus symbols: investigating preschoolers' cartographic design.
<em>Meta-Carto-Semiotics, 5</em>(1), 1-18.
Retrieved from <a href="http://ojs.meta-carto-semiotics.org/index.php/mcs/article/view/19" target="_new">http://ojs.meta-carto-semiotics.org/index.php/mcs/article/view/19</a>