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 Thunderball (novel):

"

Thunderball was published on 27 March 1961 in the UK as a hardcover edition by publishers Jonathan Cape; it was 253 pages long and cost 15 shillings.[2] 50,938 copies were printed[1] and quickly sold out.[3] Thunderball was published in the US by Viking Press and sold better than any of the previous Bond books.[4] Publishers Jonathan Cape spent £2,000 (£44,847 in 2019 pounds[5]) on advance publicity.[6] Cape sent out 130 review copies to critics and others and 32,000 copies of the novel had been sent to 864 UK booksellers and 603 outside the UK.[6]