Belmar, Guillem, Cindy van Boven, and Sara Pinho. 2023. “WHY DO ADULTS DECIDE TO LEARN A MINORITY LANGUAGE? A STUDY OF THE MOTIVATION(S) OF POTENTIAL NEW SPEAKERS OF WEST FRISIAN”. Sustainable Multilingualism / Darnioji Daugiakalbystė, no. 14 (March):138-59. https://doi.org/10.2478/sm-2019-0007.