R. S.  Bailey, Hislop, J. R. G., and Mason, J., ?The fish and shellfish resources in seas adjacent to the Outer Hebrides?, Proc. R. Soc. Edinburgh. Sect. B. Biol. Sci., vol. 77, pp. 479?494, 1979.

R. N.  Campbell and Williamson, R. B., ?The fishes of inland waters in the Outer Hebrides?, Proc. R. Soc. Edinburgh. Sect. B. Biol. Sci., vol. 77, pp. 377?393, 2011.