sister ship . EKI terminibaas Esterm. Estonian Language Institute, Sõnaveeb 2026. https://sonaveeb.ee/search/unif//esterm/sister%20ship/1/eng (10.07.2026)
sister ship . Purjetamise terminibaas. Estonian Language Institute, Sõnaveeb 2026. https://sonaveeb.ee/search/unif//pur/sister%20ship/1/eng (10.07.2026)