Meriläinen, M., and M. Piispanen. “The Early Bird Gets the Word: Joy and Enthusiasm for Early Foreign Language Learning in the Learning Landscape of the Contextual Pedagogical Approach to Learning”. International Electronic Journal of Elementary Education, vol. 12, no. 1, Oct. 2019, pp. 11-17, https://iejee.com/index.php/IEJEE/article/view/828.