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 Tatsuo Nagai:

"

Nagai was born in the Sarugakuchō neighborhood of Tokyo in impoverished circumstances. He was forced to quit school after graduation from elementary school due to his father's illness and premature death. However, he had already begun to exhibit signs of literary talent, and his first novel Kappan-ya no Hanashi ("Tale of a Printer's Shop") was published when he was 16. This novel won a prize in a competition and was highly praised by the well-known author and editor, Kikuchi Kan.