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 Paddy field:

"

The first paddy fields in Japan date to the Early Yayoi period (300 BC – 250 AD).[1] The Early Yayoi has been re-dated,[2] and based on studies of early Japanese paddy formations in Kyushu it appears that wet-field rice agriculture in Japan was directly adopted from the Lower Yangtze river basin in Eastern China.[citation needed]