M. E. Y. Low and P. K. L. Ng, “On the identity of Collingwood’s Pill-Making Crab, Sphaerapoeia collingwoodii Collingwood, 1868 (Crustacea: Decapoda: Brachyura: Dotillidae)”, Zootaxa, vol. 2761, no. 1, pp. 64–68, Feb. 2011.