Citation Hunt

The Wikipedia snippet below is not backed by a reliable source. Can you find one?

Click I got this! to go to Wikipedia and fix the snippet, or Next! to see another one. Good luck!

In page Mary Ellis:

"

In 1954 Ellis was cast as Mrs. Erlynne in Coward's musical After the Ball, but her singing voice had deteriorated drastically, and much of her music had to be cut.[5] Coward blamed her performance for the relative failure of the show.[6] She appeared in the 1960 movie The 3 Worlds of Gulliver and made her last stage appearance in 1970, playing Mrs Warren in Shaw's Mrs Warren's Profession at the Yvonne Arnaud Theatre in Guildford.[3] She appeared in 1993 in the television series Sherlock Holmes and again in 1994, playing Mary Maberley.