You should be able to find it at your local bookstore, if you're one of the folks who is lucky enough to have a local bookstore.
If not, it is of course available from all the usual online booksellers.
You can find it at:
Or any one of hundreds of independent bookstores or B&N outlets. Just find your favorite.
And if you're looking for an autographed copies, those are available too, from the Jean Cocteau Cinema Bookstore: