Szczechowicz B, Kryczka M, Alejziak W. Performance of Empirical Research as a Method for Achieving Professional Students’ Competence: a Case Study of Teaching Sales Skills to Future Employees of the Beauty Industry. J Educ Health Sport [Internet]. 2023 Feb. 15 [cited 2025 Jun. 28];13(4):21-36. Available from: https://apcz.umk.pl/JEHS/article/view/41863