Cita APA (7a ed.)

Willmore, B. (2008). Photoshop CS4: Up to speed (1st edition.). Peachpit Press.

Cita Chicago Style (17a ed.)

Willmore, Ben. Photoshop CS4: Up to Speed. 1st edition. Berkeley, Calif.: Peachpit Press, 2008.

Cita MLA (9a ed.)

Willmore, Ben. Photoshop CS4: Up to Speed. 1st edition. Peachpit Press, 2008.