(2018). Norma The Metropolitan Opera ; produced by Louisa Briccetti, Victoria Warivonchik ; libretto by Felice Romani ; directed by Gary Halvorson. [videorecording].
Chicago-viite (17. p.)Norma The Metropolitan Opera ; Produced by Louisa Briccetti, Victoria Warivonchik ; Libretto by Felice Romani ; Directed by Gary Halvorson. [videorecording]. 2018.
MLA-viite (9. p.)Norma The Metropolitan Opera ; Produced by Louisa Briccetti, Victoria Warivonchik ; Libretto by Felice Romani ; Directed by Gary Halvorson. [videorecording]. 2018.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.