1. Working with missing values;Acock;Journal of Marriage and Family,2005
2. Bowlby, J. (1982). Attachment and loss: Vol. 1. Attachment (2nd ed.). New York: Basic Books.
3. The ecology of human development;Bronfenbrenner,1979
4. Caught between parents: Adolescents’ experience in divorced homes;Buchnan;Child Development,1991
5. Gratitude contemplation as a method to improve human well-being and physical functioning: Theoretical review of existing research;Burzyńska;Journal of Education, Health and Sport,2018