You need to be careful as to how you use any work that someone else has copyrighted but it appears that titles of books seem to be a little trickier that other works. This article over at Pub Law seems to say that titles are not protected as copyrighted material (Taken from Pub Law reference below):
"Copyright Office Regulations and judicial decisions have made it clear that titles are only the equivalent of short slogans and therefore a title does not contain sufficient expression to be worthy of copyright protection"
Now, the title could be a trademark but that seems to only apply to a series of books not a single title. Again, same Pub Law article quote:
"A publisher cannot obtain federal trademark registration for a single title, but a series title may be federally registered."
I guess you need to figure out if the author either registered the title as a trademark (since it might be used to identify something else) or it's a series of books. You can search for trademarks here.
This is a pretty interesting question since it is not handled consistently.