Cita APA (7a ed.)

Harrington, R. (2008). Understanding Adobe Photoshop CS4: The essential techniques for imaging professionals. Peachpit Press.

Cita Chicago Style (17a ed.)

Harrington, Richard. Understanding Adobe Photoshop CS4: The Essential Techniques for Imaging Professionals. Berkeley, Calif.: Peachpit Press, 2008.

Cita MLA (8a ed.)

Harrington, Richard. Understanding Adobe Photoshop CS4: The Essential Techniques for Imaging Professionals. Peachpit Press, 2008.