APA Citation

 Aaland, M. (2005).  Photoshop elements 4 solutions: The art of digital photography.  Wiley.

Chicago Style Citation

 Aaland, Mikkel.  Photoshop Elements 4 Solutions: The Art of Digital Photography.  Wiley, 2005.

MLA Citation

 Aaland, Mikkel.  Photoshop Elements 4 Solutions: The Art of Digital Photography.  Wiley, 2005.

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