Jones, H.D. 2005. Identification: British land flatworms. British Wildlife 16(3): 189-194. [A few species have been added to the British list since this was published.]
Recording all species
Jones, H.D. 2005. Identification: British land flatworms. British Wildlife 16(3): 189-194. [A few species have been added to the British list since this was published.]