Proper attribution for a edited Creative Commons image

Ein Buch in 7 Minuten

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Hey,

i wanna use following image in one of my videos:

See image 1, the source is wikimedia commons.

But the original source is flickr. But here it still has its background.

See image 2.

So do i have to refer to the source as wikimedia or flickr? And if i refer to flickr, do i have to mention that the image is edited? What about the guy who edited the image, his name is also mentioned on the wikimedia site.
 

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