Ojcewicz, Grzegorz. “Animals in Russian Black Magic Rituals According to Natasha Helvin”. Zoophilologica. Polish Journal of Animal Studies, no. 2 (12) (December 29, 2023): 1-24. Accessed May 18, 2024. https://journals.us.edu.pl/index.php/ZOOPHILOLOGICA/article/view/12893.