Marotta, Luana, Lucia Tramonte, and J. Douglas Willms. “Equivalence of Testing Instruments in Canada: Studying Item Bias in a Cross-Cultural Assessment for Preschoolers”. Canadian Journal of Education/Revue canadienne de l’éducation 38, no. 3 (August 24, 2015): 1-23. Accessed October 24, 2020. https://journals.sfu.ca/cje/index.php/cje-rce/article/view/1424.