MolluscaBase name details
original description
Smith, S. M. (1979). Littorina rudis var. scotia and its adaptation to the extreme environment of Rockell (Mollusca: Gastropoda). <em>Porcupine Newsletter.</em> 1: 138-139. [details]
additional source
Reid, D. G. (1996). Systematics and evolution of <i>Littorina</i>. <em>The Ray Society.</em> 463p. [details]