Frost, Darrel R. (2016). "Callulina Nieden, 1911". Amphibian Species of the World: an Online Reference. Version 6.0. American Museum of Natural History. Retrieved 22 January 2016.
doi.org
Loader, S. P.; Measey, G. J.; de Sá, R. O.; Malonza, P. K. (2009). "A new brevicipitid species (Brevicipitidae: Callulina) from the fragmented forests of the Taita Hills, Kenya". Zootaxa. 2123: 55–68. doi:10.11646/zootaxa.2123.1.3.
Loader, S. P.; Gower, D. J.; Müller, H.; Menegon, M. (2010). "Two new species of Callulina (Amphibia: Anura: Brevicipitidae) from the Nguru Mountains, Tanzania". Zootaxa. 2694: 26–42. doi:10.11646/zootaxa.2694.1.2.
de Sá, R. O.; Loader, S. P.; Channing, A. (2004). "A new species of Callulina (Anura: Microhylidae) from the West Usambara Mountains, Tanzania". Journal of Herpetology. 38 (2): 219–224. doi:10.1670/209-03A. S2CID86129626.
de Sá, R. O.; Loader, S. P.; Channing, A. (2004). "A new species of Callulina (Anura: Microhylidae) from the West Usambara Mountains, Tanzania". Journal of Herpetology. 38 (2): 219–224. doi:10.1670/209-03A. S2CID86129626.