John Edward Gray: Shells. In: Parry W.E. (Hrsg.): Supplement to Appendix, Parry's Voyage for the Discovery of a north-west passage in the years 1819-1820, contaning an account of the subjects of Natural History. London: John Murray Appendix 10, Zool.: 240–246, 1824 Online bei www.biodiversitylibrary.org (S.CCXLIV = 244)
google.de
books.google.de
Mary Ann Gilbert: The Discordant Mussel (Musculus Discors) and the Little Black Mussel (Musculus Niger) in Maine and Their Relevance to the Critical Areas Program. 26 S., Maine State Planning Office, 1977 Schnipsel bei Google Books
