Leach W. E. (1819). A list of invertebrate animals discovered by H. M. S. Isabella, in a voyage to the Arctic regions: corrected by W. E. Leach. Appendix II.
p.lxi - lxiv [in] Ross, John A voyage of discovery in His Majesty's ships Isabella and Alexander [in 1818] for the purpose of exploring Baffin's Bay and enquiring into the possibility of a northwest passage.
[book]. xxxix+252 pp., 29 pls, 3 maps. John Murray. London.