APA (7th ed.) Citation

Anon, E., & Anon, J. (2010). Photoshop CS5 for nature photographers: A workshop in a book. Wiley.

Chicago Style (17th ed.) Citation

Anon, Ellen, and Josh Anon. Photoshop CS5 for Nature Photographers: A Workshop in a Book. Indianapolis, Ind.: Wiley, 2010.

MLA (8th ed.) Citation

Anon, Ellen, and Josh Anon. Photoshop CS5 for Nature Photographers: A Workshop in a Book. Wiley, 2010.

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