Howson, C.M.; Picton, B.E. (1997). The species directory of the marine fauna and flora of the British Isles and surrounding seas. Ulster Museum Publication, 276. The Ulster Museum: Belfast, UK. ISBN 0-948150-06-8. vi, 508 (+ cd-rom) pp.
663
Howson, C.M.; Picton, B.E.
1997
The species directory of the marine fauna and flora of the British Isles and surrounding seas
Ulster Museum Publication, 276. The Ulster Museum: Belfast, UK. ISBN 0-948150-06-8