Ludwikowska-Świeboda, Karolina. „A sudden and unexpected death of a spouse and the severity of symptoms of complicated grief and Post-Traumatic Stress Disorder ”. Kwartalnik Naukowy Fides et Ratio, t. 49, nr 1, marzec 2022, s. 191-03, https://doi.org/10.34766/fetr.v49i1.1049.