PIOTROWSKI, Robert Piotr. THE FEAR OF DISHARMONY IN POLISH FOLK LITERATURE OF THE 19TH CENTURY AND THE BEGINNING OF THE 20TH CENTURY AS EXEMPLIFIED IN THE BELIEFS RELATED TO CHANGELINGS. Literatura Ludowa. Journal of Folklore and Popular Culture. Online. 27 August 2018. Vol. 62, no. 1, pp. 39-48. [Accessed 19 December 2025]. DOI 10.12775/LL.1.2018.003.