How do you know if an image is copyrighted?

Related questions

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5. Should stock photos be cited?
6. What does Getty Images pay?
7. How do you cite a digital image?
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Tags

1. #original
2. #probably
3. #their
4. #copyright
5. #poster
6. #simply
7. #decline
8. #copyrighted
9. #image
10. #commercial
11. #personal
12. #holder
13. #permission
14. #users