APA (7th ed.) Citation

Adobe Creative Team. (2009). Adobe Photoshop CS4. AdobePress.

Chicago Style (17th ed.) Citation

Adobe Creative Team. Adobe Photoshop CS4. Berkeley, Calif: AdobePress, 2009.

MLA (9th ed.) Citation

Adobe Creative Team. Adobe Photoshop CS4. AdobePress, 2009.

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