Final answer:
The protection for a book's copyright typically lasts for the life of the author plus 70 years after the author's death, but there are exceptions for works made for hire and anonymous or pseudonymous works.
Step-by-step explanation:
The protection for a book's copyright will last for the life of the author plus 70 years after the author's death. If the book is a joint work with multiple authors, the copyright term will be 70 years after the last surviving author's death.
In some cases, for works made for hire and anonymous or pseudonymous works, the duration of copyright is 95 years from publication or 120 years from creation, whichever is shorter.