Shear, William A. 2016. “Redescription of the South African Millipede Cylichnogaster lawrencei Verhoeff, 1937 and Notes on the Family Siphonotidae (Diplopoda, Polyzoniida)”. Zootaxa 4079 (1). Auckland, New Zealand:119–128. https://doi.org/10.11646/zootaxa.4079.1.8.