Thanks for your reply,
As I told You at first post, The book will be published globally!
I want to find a good publisher in USA.
That's why I want to know more about copyright law in USA and other countries.
What happen when I introduce a website and link to it in a book without permission?!
Is it legal or illegal?
Laws in the U.S. are fact-specific. In the U.S., it will often take a court's review of the facts of each individual case to determine whether a use of copyrighted material is infringement or not. A court will be asked to decide the matter if any holder of a copyright takes exception to the unauthorized use of his/her material and files suit against the unauthorized user.
So, I cannot really tell you if your introduction of a website and a link to the website in your book, without permission from the website owner/copyright holder, will result in a lawsuit that you could lose. But I
can tell you that the best way to avoid any legal entanglements with a copyright holder is to get permission from the copyright holder in advance of using any rights-protected material.
For a complete look at U.S. copyright laws, you can visit the official U.S. Copyright Office website through the following link:
http://www.copyright.gov
The WIPO link I provided earlier provides you with access to copyright laws in other countries.
But it is important to note that, even if you have a U.S. publisher for your book, if you are the author of the book and you reside in Iran, and a lawsuit arises over the content of your book, any suit filed against you will be filed against you in Iran. Any lawsuit will be heard in an Iranian court. And it will be under Iranian laws, not U.S. laws, that any suit filed against you will be decided.
That is why you need to refer to the laws in your country when you are writing your book. If your book does not violate the copyright laws of your country (which, to emphasize what Zigner said earlier, are MUCH different than the copyright laws here), then anyone suing you will have a harder time winning a legal action against you.
With all of that said, you should still have a publishing law professional in your area review your book idea and drafts to check for legally problematic areas. I recommend you have a final professional review of your completed manuscript prior to publication. If you are planning to have your book published through a large U.S. publishing house, this will be done as a matter of course.
Acquiring permission from all copyright holders whose material you intend to include in your book, and having your book's content reviewed and edited properly prior to publication, are the best ways to avoid a lawsuit.
Good luck, vahid.