Schepman M.M. (1913) The Prosobranchia, Pulmonata and Opisthobranchia Tectibranchiata of the Siboga Expedition. Part VI. Pulmonata and Opisthobranchia Tectibranchiata, Tribe Bullomorpha. Siboga-Expeditie, 49f: 443–494, pls. 31–32. Leiden, E. J. Brill.
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Schepman, M. M.
1913
The Prosobranchia, Pulmonata and Opisthobranchia Tectibranchiata of the Siboga Expedition. Part VI. Pulmonata and Opisthobranchia Tectibranchiata, Tribe Bullomorpha