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Helen Helen Keller Helena của Liên hiệp Anh Helene Fischer Helen Hayes Helen (thần thoại) Helena Victoria của Schleswig-Holstein Helen Mirren Helen Brooke Taussig Helena Bonham CarterTài liệu tham khảo
WikiPedia: Helena_của_Liên_hiệp_Anh https://www.thegazette.co.uk/London/issue/20626/pa... https://www.thegazette.co.uk/London/issue/20627/pa... http://www.oxforddnb.com/index/41/101041067/ https://www.thegazette.co.uk/London/issue/23140/pa... https://web.archive.org/web/20080209161803/http://... http://www.r-bna.com/registration.asp https://web.archive.org/web/20080210110244/http://... http://www.stgeorges-windsor.org/history/hist_buri... https://web.archive.org/web/20180524151425/http://... http://www.rbna.org.uk/message.asp