van den Doel, Rias, Anne-France C. H. Pinget, and Hugo Quené. “Non-Native Attitudes to /θ/ And /ð/: A European Case Study”. Research in Language 16, no. 4 (December 30, 2018): 407–427. Accessed April 23, 2024. https://czasopisma.uni.lodz.pl/research/article/view/8087.