@techreport{CBOS Public Opinion Research Center2021,
author = {CBOS Public Opinion Research Center},
title= {Family 500 plus program after 5 years of operation [electronic resource},
year = {2021},
URL = {https://www.cbos.pl/PL/publikacje/public_opinion/2021/03_2021.pdf },
publisher = {CBOS Public Opinion Research Center},
address = {Warsaw},
}