ROLLE, N. Lexical tone contrast in Izon as ubiquitous floating tone. Phonological Data and Analysis, [S. l.], v. 3, n. 4, p. 1–40, 2021. DOI: 10.3765/pda.v3art4.37. Disponível em: https://phondata.org/index.php/pda/article/view/37. Acesso em: 16 oct. 2021.