speech sound . EKI Combined Dictionary 2026. Estonian Language Institute, Sõnaveeb 2026. https://sonaveeb.ee/search/unif/dlall/eki/speech%20sound/1/eng (20.06.2026)
Translations
speech sound . Haridussõnastik. Estonian Language Institute, Sõnaveeb 2026. https://sonaveeb.ee/search/unif//har/speech%20sound/1/eng (20.06.2026)