ルパート・ホルムズ
↑ "Richard Holmes: Baritone", OperaMusica.com; and Heath, Mary Jo. " Backstage Spotlight: Richard Holmes", MetOpera.org, November 1, 2016
↑ Roberts, David (2006). British Hit Singles & Albums (19th ed.). London: Guinness World Records Limited. p. 258. ISBN 1-904994-10-5