Kraberg, Alexandra, Marcus Baumann & Claus-Dieter Durselen, Coastal Phytoplankton: Photo Guide for Northern European Seas, Verlag Dr. Friedrich Pfeil, 2010. (QK934.7)
Larink, Otto & Wilfried Westheide, Coastal Plankton: Photo Guide for European Seas, Verlag Dr. Friedrich Pfeil, 2011. (QH91.8.P5.L3)