второй язык . EKI Combined Dictionary 2026. Estonian Language Institute, Sõnaveeb 2026. https://sonaveeb.ee/search/unif/dlall/eki/%D0%B2%D1%82%D0%BE%D1%80%D0%BE%D0%B9%20%D1%8F%D0%B7%D1%8B%D0%BA/1/rus (21.06.2026)
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второй язык . Haridussõnastik. Estonian Language Institute, Sõnaveeb 2026. https://sonaveeb.ee/search/unif//har/%D0%B2%D1%82%D0%BE%D1%80%D0%BE%D0%B9%20%D1%8F%D0%B7%D1%8B%D0%BA/1/rus (21.06.2026)