The title of a book is different in the catalogue and on the cover. How do I cite it?
List both. The official title is whatever is on the book, no matter what (so even including any typos and stuff). Still, it makes sense to mention the problem:


  Thomas Schultz and Marc Vrakking (eds). Attosecond and XUV Physics: Ultrafast Dynamics and Spectroscopy [also known as "Attosecond and XUV Spectroscopy: Ultrafast Dynamics and Spectroscopy"]. Wiley, 2014, 624pp. ISBN: 978-3-527-41124-5.


Bear in mind that the title is the one listed inside (on the first sheet of paper), not on the cover (thanks Andrew for pointing this). Also, I would include the ISBN in this case, even if you don't include it for other book references. Either in a standard way as shown above, or in a note like the following; remember that rules for providing auxiliary information are quite loose and you can twist them to your needs:


  Thomas Schultz and Marc Vrakking (eds). Attosecond and XUV Physics: Ultrafast Dynamics and Spectroscopy. Wiley, 2014, 624pp. [also known as: "Attosecond and XUV Spectroscopy: Ultrafast Dynamics and Spectroscopy". ISBN: 978-3-527-41124-5.]