de Smet, W. H. “A Review of the Marine and Brackish-Water Species of Testudinella (Rotifera: Monogononta, Testudinellidae), With the Description of Two New Species”. Zootaxa, vol. 2092, no. 1, May 2009, pp. 1–20, doi:10.11646/zootaxa.2092.1.1.