Steffen, V., Prieto Steffen, D. e Bueno-Villaverde, Ángeles 2020. SPANISH LEGISLATION AND IB PYP LANGUAGE POLICY DEVELOPMENT. Journal of Supranational Policies of Education (JOSPOE). 12 (Dez. 2020), 99–120. DOI:https://doi.org/10.15366/jospoe2020.12.006.