Bildnachweis Standardlizens

Aber ja. 

Les hierzu die Lizensbedingen nach. Da steht, dass der Nachweis an der Stelle sein soll, die am Besten dafür geeignet ist. 

Look here for more information on licensing: https://community.adobe.com/t5/stock/links-for-licensing-terms/td-p/11366788
(Disclaimer: As always with licensing, this is my interpretation of the rules. I think they are correct and advice is based on reading and interpreting the licence terms and on fair use for both the buyer and the artist/stock company, but I cannot rule out that my interpretation is wrong. I'm not an Adobe employee).