==References==NotesSources* Chrissochoidis, Ilias, Heike Harmgart, Steffen Huck, and Wieland Müller, "'Though this be madness, yet there is method in't': A Counterfactual Analysis of Richard Wagner's "Tannhäuser", "Music & Letters" 95:4 (November 2014), 584-602.
* Тангейзер (легенда)* Либретто* Подробная информация на немецком языке // home.arcor.de* Вагнер «Тангейзер», источники сюжета* "Ilias Chrissochoidis, Heike Harmgart, Steffen Huck, and Wieland Müller", "'Though this be madness, yet there is method in’t': A Counterfactual Analysis of Richard Wagner’s "Tannhäuser", "Music & Letters" 95:4 (November 2014), 584—602.