Indri Yani Septiana, Nur Diana, Eva Naritawati, Maximillian Wilson, and Made Swastika. “Evaluating Voice Quality and Pharyngeal Function in Professional Singers: A Cross-Sectional Study in Indonesia”. Sriwijaya Journal of Otorhinolaryngology, Vol. 2, no. 1, Oct. 2023, pp. 40-52, doi:10.59345/sjorl.v1i2.93.