Gower, D.J., Papadopoulou, A., Doherty-Bone, T.M., Pupin, F., San Mauro, D., Loader, S.P. and Wilkinson, M. 2011. The systematics of Boulengerula fischeri (Amphibia: Gymnophiona: Caeciliidae) based on morphological and molecular data. Zootaxa. 2767, 1 (Feb. 2011), 14–24. DOI:https://doi.org/10.11646/zootaxa.2767.1.2.