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 Martin:

"

Wanting to learn more moves, Martin went to California to attend the dance school at the Franchon and Marco School of the Theatre and then opened her own dance studio in Mineral Wells, Texas. She was given a ballroom studio with the premise that she would sing in the lobby every Saturday. There, she learned how to sing into a microphone and how to phrase blues songs. One day at work, she accidentally walked into the wrong room, where auditions were being held. They asked her in what key she would like to sing "How Red the Rose, How Blue the Sky". Having absolutely no idea what her key was, she sang regardless and got the job.[citation needed]