Kajak, Piotr. 2023. “Which Came First, the Chicken or the Egg? – Chronological Reflections Upon the Beginnings of Teaching Polish As a Foreign Language in Lodz and Warsaw”. Acta Universitatis Lodziensis. Kształcenie Polonistyczne Cudzoziemców 30 (December):417-32. https://doi.org/10.18778/0860-6587.30.25.