ONLINE:

amazon.com
BarnesandNoble.com
Black Images
Book People
Brookline Booksmith
Chapters
GoHastings
Indigo Books & Music
Murder by the Book
Mystery Book Store
Powell's Books
Twig Book Shop
Wordsworth

or AT YOUR LOCAL BOOKSTORE:

click here to find a bookstore near you:
American Booksellers Association: BookWeb Bookseller Directories