E. Rolán (2005)
Part 1: Polyplacophora and Gastropoda, E. Rolán - (2005), Part 1: Polyplacophora and Gastropoda, with contributions on Polyplacophora by H. Strack, on Opisthobranchia by A. Valdez, and on the continental Mollusca, mainly Pulmonata by K. Groh. 455 pp., 116 figs, 82 (45 coloured) plates., Swiss broch. 4to