@book{273921, author = {Stala, Józef and Uniwersytet Papieski Jana Pawła II (Kraków).}, title = {Strengthening families /}, publisher = {The Pontifical University of John Paul II in Krakow Press,}, year = {2016.}, series = {Family Studies ;}, address = {Kraków :}, url = {http://bc.upjp2.edu.pl/publication/4869} }