S T Williams, D G Reid, D T J Littlewood: A molecular phylogeny of the Littorininae (Gastropoda: Littorinidae): unequal evolutionary rates, morphological parallelism, and biogeography of the Southern Ocean. In: Mol Phylogenet Evol. 1. Jahrgang, Nr.1, 2003, S.60–86, doi:10.1016/S1055-7903(03)00038-1, PMID 12801472.
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D. G. Reid: "The genus Echinolittorina Habe, 1956 (Gastropoda: Littorinidae) in the western Atlantic Ocean." In: Zootaxa, 2184, 2009, S. 1–103, abstract (PDF; 22 kB)
S T Williams, D G Reid, D T J Littlewood: A molecular phylogeny of the Littorininae (Gastropoda: Littorinidae): unequal evolutionary rates, morphological parallelism, and biogeography of the Southern Ocean. In: Mol Phylogenet Evol. 1. Jahrgang, Nr.1, 2003, S.60–86, doi:10.1016/S1055-7903(03)00038-1, PMID 12801472.