Marine flora and fauna of the northeastern United States: Echinodermata: Echinoidea
Serafy, D.K.; Fell, F.J. (1985). Marine flora and fauna of the northeastern United States: Echinodermata: Echinoidea. NOAA Technical Report NMFS, 33. NOAA: Springfield. 27 pp.
Deel van: NOAA Technical Report NMFS. NOAA: Washington, D.C.. ISSN 0892-8908, meer