HUSSEIN, I. .; AL-OREIFI, J. .; YASIN, A. . Acoustic Characteristics of Pronouncing Disordered /r/ according to Duration and Number of Trills: A Comparative study. Dirasat: Human and Social Sciences, [S. l.], v. 49, n. 2, p. 300–319, 2022. DOI: 10.35516/hum.v49i2.1792. Disponível em: https://dsr.ju.edu.jo/djournals/index.php/Hum/article/view/1792. Acesso em: 22 dec. 2025.