APA Citation

 Obermeier, B. (2013).  Photoshop elements 11 all-in-one for dummies.  For Dummies, a Wiley Brand.

Chicago Style Citation

 Obermeier, Barbara.  Photoshop Elements 11 All-in-one for Dummies.  For Dummies, a Wiley Brand, 2013.

MLA Citation

 Obermeier, Barbara.  Photoshop Elements 11 All-in-one for Dummies.  For Dummies, a Wiley Brand, 2013.

Warning: These citations may not always be 100% accurate.