Please specify if terms of license are complied with!Line Emilie Fedders (2010-08-10). "Østers er truet af CO2". Videnskab.dk. ISSN 1903-301X.
Please specify if terms of license are complied with!Siân Cleaver (2010). Tipping the Velvet - Bookmarks - Page 3. "Have you ever tasted a Whitstable oyster?". Book Drum. Retrieved on 2011-01-11.