A. Ahrens, J. Zascerinska, and A. Aleksejeva, “FOSTERING EXTERNAL AND INTERNAL SUSTAINABILITY WITHIN THE ENGLISH FOR ACADEMIC PURPOSES COURSE IN THE COVID-19 PANDEMIC”, EID, vol. 1, no. 2, pp. 6–15, Jun. 2025, doi: 10.17770/eid2021.1.5412.