Günther, Rainer. 2013. “From a Dwarf to a Giant: Revalidation of Callulops valvifer (Barbour, 1910), (Amphibia, Anura, Microhylidae)”. Zootaxa 3641 (3). Auckland, New Zealand:271–281. https://doi.org/10.11646/zootaxa.3641.3.6.