Boersma, Paul; van Heuven, Vincent (2001). "Speak and unSpeak with Praat"(PDF). Glot International. 5 (9/10): 341–347. Archived from the original(PDF) on 11 July 2019. Retrieved 7 June 2020.
"License". Phonetic Sciences | Praat. Archived from the original on 20 August 2019. Retrieved 3 September 2019.
web.archive.org
Boersma, Paul; van Heuven, Vincent (2001). "Speak and unSpeak with Praat"(PDF). Glot International. 5 (9/10): 341–347. Archived from the original(PDF) on 11 July 2019. Retrieved 7 June 2020.
"License". Phonetic Sciences | Praat. Archived from the original on 20 August 2019. Retrieved 3 September 2019.