Tsai, N. 2023. No rewards on the way: studying Polish with Duolingo by Taiwanese student – learning strategies and the app appropriability. Acta Universitatis Lodziensis. Kształcenie Polonistyczne Cudzoziemców. 30, (Dec. 2023), 163–188. DOI:https://doi.org/10.18778/0860-6587.30.11.