Dyer, Anna (2002). "Rossia pacifica (Berry, 1911)". Invertebrates of the Salish Sea. Walla Walla University. Archived from the original on 2014-02-19. Retrieved 2014-03-22.
Dyer, Anna (2002). "Rossia pacifica (Berry, 1911)". Invertebrates of the Salish Sea. Walla Walla University. Archived from the original on 2014-02-19. Retrieved 2014-03-22.