APA (7th ed.) Citation

Harrington, R. (2006). Understanding Adobe Photoshop: Digital imaging concepts and techniques. Peachpit.

Chicago Style (17th ed.) Citation

Harrington, Richard. Understanding Adobe Photoshop: Digital Imaging Concepts and Techniques. Berkeley, Calif: Peachpit, 2006.

MLA (9th ed.) Citation

Harrington, Richard. Understanding Adobe Photoshop: Digital Imaging Concepts and Techniques. Peachpit, 2006.