On a Collection of Land-Shells made in Borneo by Mr. A. Everett, with Descriptions of supposed new Species. Part II. Zonitidae and Helicidae. - Godwin-Austen, H. H. (Proceedings of the Zoological Society of London, 1891)

The Mollusca of the Dutch Scientific Borneo-Expedition - M.M. Schepman (Notes from the Leyden Museum, 1896)

On a collection of land-shells from Sarawak, British North Borneo, Palawan, and other neighbouring islands - E.A. Smith (Proceedings of the Zoological Society of London, 1895)

Beschreibung einiger im östlichen Borneo von Dr. Martin Schmidt gesammelten Land und Süßwasser-Conchylien. - E. von Martens (Mitteilungen aus dem Zoologischen Museum, 1908)

Catalogue of the non-marine Mollusca of Sumatra and of its satelite Islands - W.S.S. van Benthem Jutting (Beaufortia, 1959)