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 After School (group):

"

After School was first formed following Kahi's departure from Korean-American girl group S-Blush,[1] as she began planning to produce a new group together with the current CEO of Pledis Entertainment.[citation needed] The first member other than Kahi was Bekah, who was a trainee while Kahi was in S-Blush. With Kahi's recommendation, Bekah was brought from Hawaii to South Korea. They were then introduced to Jungah, followed by Soyoung and Jooyeon, forming a five-member group.