Szewczyk-Jarocka, M. ., Sawicka, J., & Nowacka, A. . (2021). UNREGISTERED EMPLOYMENT IN THE LOCAL LABOUR MARKET: CASE STUDY OF PŁOCK. Acta Scientiarum Polonorum. Oeconomia, 20(1), 71–79. https://doi.org/10.22630/ASPE.2021.20.1.7