If you are seeking to use a copyrighted work, you may have to obtain permission from the copyright owner. The owner may be the original creator of the work, that person’s employer or a publisher. In some instances, you can contact the owner directly. In other cases, you'll need to secure permission from an industry licensing agency or a publisher.
Sometimes, the copyright owner may require a fee or impose other conditions. You have to decide if the cost and conditions are acceptable. You should feel free to negotiate.
Based on and used under a Creative Commons BY license from the Copyright Advisory Office of Columbia University, Kenneth D. Crews, director.
Before requesting permission from a copyright owner, make sure you need permission.
You might not need permission if:
Based on and used under a Creative Commons BY license from the Copyright Advisory Office of Columbia University, Kenneth D. Crews, director.