When you wish to use a copyrighted work and such use cannot reasonably be justified
as “fair use,” you should seek permission for this use from the copyright owner. There
is no universally applicable set of steps to seek and obtain copyright permission,
but following are some guidelines:
If you know who owns the copyright of the material and you can find a contact address,
you may write directly to that person requesting permission.
If you do not know who owns the copyright, but do know the publisher of the material,
contact the publisher for copyright permission. To determine the publisher, consult
the copyright page and/or the acknowledgement page of the work.