Below are details for the literature referred to in Macronesia posts.

Debelius, Helmut, and Rudie H. Kuiter.  2007.  Nudibranchs of the World.  IKAN-Unterwasserarchiv, Frankfurt, Germany.  360 pp.

Gosliner, Terrence M., David W. Behrens and Ángel Valdés.  2008.  Indo-Pacific Nudibranchs and Sea Slugs: A Field Guide to the World's Most Diverse Fauna.  First Edition.  Sea Challengers Natural History Books and the California Academy of Sciences.  Gig Harbor, Washington, and San Francisco, California, USA.  426 pp.

Humann, Paul, and Ned DeLoach.  2010.  Reef Creature Identification:  Tropical Pacific.  New World Publications, Jacksonville, Florida, USA.  497 pp.