1. (2023, March 13). Baza wiedzy—Sektorowa Rada ds. Kompetencji. Available online: https://sektorowaradanub.pl/baza-wiedzy/.
2. (2023, March 13). Raport_Cushman_2017_ver6.indd. Available online: https://hays.pl.
3. Palace, B. (2021, July 22). The Industry of the Future. Modern Business Services Sector, Available online: https://www.bls.gov/iag/tgs/iag60.htm.
4. Birt, J. (2021, July 28). Hard Skills vs. Soft Skills: What’s the Difference?. Available online: https://www.indeed.com/career-advice/resumes-cover-letters/hard-skills-vs-soft-skills.
5. Key competencies in the modern business services sector;Kuzior;Sci. Q. Organ. Manag.,2019