Hussein, I. , Al-Oreifi, J. and Yasin, A. 2022. Acoustic Characteristics of Pronouncing Disordered /r/ according to Duration and Number of Trills: A Comparative study. Dirasat: Human and Social Sciences. 49, 2 (Aug. 2022), 300–319. DOI:https://doi.org/10.35516/hum.v49i2.1792.