APA (7th ed.) Citation

Kelbytraining, Peachpit Press, & Barker, C. (2008). Photoshop CS3 channels. Kelbytraining : Peachpit Press.

Chicago Style (17th ed.) Citation

Kelbytraining, Peachpit Press, and Corey Barker. Photoshop CS3 Channels. [Berkeley, Calif.?]: Kelbytraining : Peachpit Press, 2008.

MLA (8th ed.) Citation

Kelbytraining, et al. Photoshop CS3 Channels. Kelbytraining : Peachpit Press, 2008.

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