SINGHAL, S. ., and R. . KAPOOR. “PERCEPTUAL ASSESSMENT OF TRACHEOESOPHAGAEL (TEP) VOICE”. Nepalese Journal of ENT Head &Amp; Neck Surgery, vol. 2, no. 2, Jan. 2012, pp. 8-9, https://www.njehns.org.np/index.php/njehns/article/view/49.