Galer, M., & Andrews, P. (2009). Photoshop CS4: A guide to creative image editing. Elsevier/Focal Press.
Citazione stile Chigago Style (17a edizione)Galer, Mark, e Philip Andrews. Photoshop CS4: A Guide to Creative Image Editing. Amsterdam, Boston, London: Elsevier/Focal Press, 2009.
Citatione MLA (9a ed.)Galer, Mark, e Philip Andrews. Photoshop CS4: A Guide to Creative Image Editing. Elsevier/Focal Press, 2009.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.