Template:Sheath & Sherwood, 2002
- Sheath, R.G. & Sherwood, A.R. 2002. Phylum Rhodophyta (Red Algae). In: The freshwater algal flora of the British Isles. An identification guide to freshwater and terrestrial algae. (John, D.M., Whitton, B.A. & Brook, A.J. Eds), pp. 123–143. Cambridge: Cambridge University Press.