Lewicka, Dagmara, Monika Pec, and Aleksandra Wilk. 2020. “Motives for Undertaking Organizational Citizenship Behaviors by Differentiated Generations of Employees”. Acta Universitatis Lodziensis. Folia Oeconomica 1 (346):97-111. https://doi.org/10.18778/0208-6018.346.06.