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 Paul Gauguin:

"

In addition to being one of his earliest supporters, including buying Gauguin's work and persuading dealer Paul Durand-Ruel to do the same, there was never a public support for Gauguin more unwavering than from Degas.[3] Gauguin also purchased work from Degas in the early to mid-1870s and his own monotyping predilection was probably influenced by Degas' advancements in the medium.[4]