Ashby, Michael (August 24, 2020). "Professor John Ohala, 1941–2020". International Phonetic Association. Archived from the original on September 22, 2020. Retrieved August 24, 2020.
Ashby, Michael (August 24, 2020). "Professor John Ohala, 1941–2020". International Phonetic Association. Archived from the original on September 22, 2020. Retrieved August 24, 2020.