Fortin Morales, A. M., Van De Vijver, F. J. R. and Poortinga, Y. H. (2020) “Guatemalan Pupils’ Exposure to Spanish and Educational Achievement: A Study across Ethnic Groups and Socioeconomic Status in Urban and Rural Schools”, Psihologia Resurselor Umane, 14(2), pp. 136–151. Available at: https://www.hrp-journal.com.new-skills.eu/index.php/pru/article/view/79 (Accessed: 6June2026).