Szupica-Pyrzanowska, Małgorzata, and Katarzyna Malesa. “Are They Part of the Equation? – Foreign Language Teachers Versus Language Attrition A Diagnostic Study”. Theory and Practice of Second Language Acquisition 3, no. 2 (December 12, 2017). Accessed May 6, 2025. https://trrest.vot.pl/ojsus/index.php/TAPSLA/article/view/6108.