T. - S.  Liew, Schilthuizen, M., and Vermeulen, J. J., ?Systematic Revision of the Genus Everettia Godwin-Austen, 1891 (Mollusca: Gastropoda: Dyakiidae) in Sabah, Northern Borneo?, Zoological Journal of the Linnean Society, vol. 157, pp. 515-550, 2009.