Low, M.E.Y. and Ng, P.K.L. 2011. On the identity of Collingwood’s Pill-Making Crab, Sphaerapoeia collingwoodii Collingwood, 1868 (Crustacea: Decapoda: Brachyura: Dotillidae). Zootaxa. 2761, 1 (Feb. 2011), 64–68. DOI:https://doi.org/10.11646/zootaxa.2761.1.5.