Jaroslavienė, Jurgita, and Lidija Kaukėnienė. “The Spectra of Daniel Jones’ Cardinal Vowels”. Kalbotyra 53, no. 1 (December 1, 2004): 25–38. Accessed October 27, 2025. https://test.zurnalai.vu.lt/kalbotyra/article/view/23314.