Zalega, Tomasz. “SMART SHOPPING IN CONSUMER BEHAVIOUR OF POLISH SENIORS (REPORT FROM OWN RESEARCH)”. Acta Scientiarum Polonorum. Oeconomia 16, no. 3 (September 30, 2017): 101–110. Accessed April 20, 2024. https://aspe.sggw.edu.pl/article/view/322.