Szostek, D. 2019. INFLUENCE OF DEMOGRAPHIC CHARACTERISTICS OF EMPLOYEES UPON THEIR TENDENCY TO UNDERTAKE ORGANIZATIONAL CITIZENSHIP AND COUNTERPRODUCTIVE WORK BEHAVIOURS. Acta Scientiarum Polonorum. Oeconomia. 18, 2 (Jun. 2019), 107-117. DOI:https://doi.org/10.22630/ASPE.2019.18.2.24.