As with Shutterstock, the correct attribution format required is the company name with the photographer. No need for hyper-links.
However, Deposit Photos require you place a copyright symbol before the attribution.
“Source: © depositphotos/photographer”. There is no copyright to insert here for the example, however, there is code that you will need to add it in text mode if you are using WordPress. The code is “©” and the end product should look as shown below: