original description
(of Columbella beckeri G. B. Sowerby III, 1900) Sowerby, G. B. III. (1900). On some marine shells from Pondoland and the Kowie, with descriptions of seventeen new species. <em>Proceedings of the Malacological Society of London.</em> 4(1): 1-7., available online at https://www.biodiversitylibrary.org/page/15797892
page(s): 3, pl. 1, fig. 7 [details]
original description
(of Columbella beckeri var. approximata W. H. Turton, 1932) Turton, W. H. (1932). The marine shells of Port Alfred S. Africa. Humphrey Milford, London. pp. i-xvi, 1-331, pls 1-70. [published 22 Dec. 1932].
page(s): 69, pl. 16, sp. 495. [details]
identification resource
Kilburn R.N. & Marais J.P. (2010) Columbellidae. Pp. 60-104, in: Marais A.P. & Seccombe A.D. (eds), Identification guide to the seashells of South Africa. Volume 1. Groenkloof: Centre for Molluscan Studies. 376 pp. [details]
From editor or global species database