Larsen, P.F. 2009. A Historical Record of Sponges, Bryozoa and Ascidians on the Coast of Maine:1843-1980. Bigelow Laboratory for Ocean Sciences Tech. Rept. 200905. West Boothbay Harbor, Maine., meer
Larsen, P.F., A.C. Johnson and A. Pugh. 2010. The Macrobenthos of Penobscot Bay, Maine. Bigelow Laboratory for Ocean Sciences. Consulted on http://www.iobis.org on, meer
Alle informatie in het Integrated Marine Information System (IMIS) valt onder het VLIZ Privacy beleid