вращающийся центр . Koolisõnastikud 2005–2010. Estonian Language Institute, Sõnaveeb 2026. https://sonaveeb.ee/search/unif//kool_KV/%D0%B2%D1%80%D0%B0%D1%89%D0%B0%D1%8E%D1%89%D0%B8%D0%B9%D1%81%D1%8F%20%D1%86%D0%B5%D0%BD%D1%82%D1%80/1/rus (06.10.2026)
вращающийся центр . Materjalitehnika terminibaas. Estonian Language Institute, Sõnaveeb 2026. https://sonaveeb.ee/search/unif//mtr/%D0%B2%D1%80%D0%B0%D1%89%D0%B0%D1%8E%D1%89%D0%B8%D0%B9%D1%81%D1%8F%20%D1%86%D0%B5%D0%BD%D1%82%D1%80/1/rus (06.10.2026)