@techreport{Polish Statistical Office2019,
author = {Polish Statistical Office},
title= {Household budget survey in 2018 [electronic resource},
year = {2019},
URL = {https://stat.gov.pl/en/topics/living-conditions/living-conditions/household-budget-survey-in-2018,2,13.html},
publisher = {Polish Statistical Office},
address = {Warsaw},
}