Fortin Morales AM, Van De Vijver FJR, Poortinga YH. Guatemalan Pupils’ Exposure to Spanish and Educational Achievement: A Study across Ethnic Groups and Socioeconomic Status in Urban and Rural Schools. PRU [Internet]. 2020Dec.19 [cited 2026Jun.6];14(2):136-51. Available from: https://hrp-journal.com.new-skills.eu/index.php/pru/article/view/79