APA (7th ed.) Citation

Anon, E., & Grey, T. (2005). Photoshop for nature photographers: A workshop in a book. SYBEX.

Chicago Style (17th ed.) Citation

Anon, Ellen, and Tim Grey. Photoshop for Nature Photographers: A Workshop in a Book. San Francisco ; London: SYBEX, 2005.

MLA (9th ed.) Citation

Anon, Ellen, and Tim Grey. Photoshop for Nature Photographers: A Workshop in a Book. SYBEX, 2005.