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 Jeanne Bamberger:

"

In Minneapolis, Jeanne studied piano with Joanna Graudan, who was married to Nicolai Graudan, the principal cellist of Minneapolis Symphony, and who had been a student of Artur Schnabel in Berlin. When Schnabel came to play with the Minneapolis Symphony, Joanna arranged for Jeanne to play for Schnabel and he agreed to accept her as a student.[citation needed]