A book copyright may be held by either an author or the publisher of a book, depending on many specific circumstances regarding to type of book and the terms of a book publishing contract. Books termed "work for hire" books are often copyrighted by the publisher and not the author, however often publishers may also own the copyright to books that are not work for hire assignments. A book contract should clearly state who owns the copyright, and what rights both the author and publisher have in regard to the copyrighted book. Publishing contracts are often negotiated in order to make sure the deal is fair to all involved. Literary agents as well as attorneys who specialize in publishing contracts are often consulted by authors in order to negotiate book contracts. Many authors wish to retain copyright to their creative works, allowing publishers certain rights to publish and market the book. It is recommended that anyone attempting to enter into a publishing contract seek the advice of professionals who can assist them in negotiating a fair deal for their creative works.