APA (7th ed.) Citation

Galer, M., & Andrews, P. (2009). Photoshop CS4: A guide to creative image editing ; essential skills. Elsevier.

Chicago Style (17th ed.) Citation

Galer, Mark, and Philip Andrews. Photoshop CS4: A Guide to Creative Image Editing ; Essential Skills. Amsterdam [u.a.]: Elsevier, 2009.

MLA (9th ed.) Citation

Galer, Mark, and Philip Andrews. Photoshop CS4: A Guide to Creative Image Editing ; Essential Skills. Elsevier, 2009.