Markowska-Manista, U., Zakrzewska-Olędzka, D., & Sawicki, K. (2020). Multilingualism in the Upbringing and Education of Children in Multinational Families. Case Study from Poland. KnE Social Sciences, 4(2), 64–74. https://doi.org/10.18502/kss.v4i2.6310