modern, often cheaper and faster alternatives to your university bookstore are online bookstores.
Do check shipping costs and delivery times, though, before ordering. Both depend on where you live.
For a start, here
are three links to Earth's Biggest Bookstore:
If your home is in
the Americas, you may want to check Amazon USA at
If you are living in Europe, closer alternatives are
Of course, you may also order directly from the publisher.