Cita APA

 Anon, E. (2007).  Photoshop CS3 for nature photographers: A workshop in a book.  Wiley Pub.

Chicago Style Citation

 Anon, Ellen.  Photoshop CS3 for Nature Photographers: A Workshop in a Book.  Wiley Pub, 2007.

Cita MLA

 Anon, Ellen.  Photoshop CS3 for Nature Photographers: A Workshop in a Book.  Wiley Pub, 2007.

Atenció: Aquestes cites poden no estar 100% correctes.