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 Claude Frank:

"

Of Jewish ancestry, Frank was born in Nuremberg, Germany. His father emigrated to Brussels after the advent of the Third Reich,[1] and the family eventually settled in Paris when Frank was 12.[2] Frank subsequently began studies at the Paris Conservatoire, but in 1940, he and his mother escaped France by way of the Pyrenees and Lisbon, and settled in the USA. Frank studied with Artur Schnabel in New York, for whom he first played in Europe.[3] He also was a pupil of Maria Curcio.[4] He studied composition and conducting at Columbia University, where his teachers included Paul Dessau.[1] At Tanglewood, he studied with Serge Koussevitzky. He became an American citizen in 1944 and served in the US military, which interrupted his piano studies.[2]