Harvey, Anthony. “Haunting Vocabulary and Celtic Lexicography: Towards a Taxonomy of Ghost Words”. Studia Celtica Posnaniensia 4, no. 1 (December 1, 2019): 44–58. Accessed December 12, 2024. https://pressto.amu.edu.pl/index.php/scp/article/view/scp-2019-0003.