Grundmann, GL; Neyra, M; Normand, P (2000). “High-resolution phylogenetic analysis of NO2--oxidizing Nitrobacter species using the rrs-rrl IGS sequence and rrl genes”. International Journal of Systematic and Evolutionary Microbiology. 50 (Pt 5): 1893–8. doi:10.1099/00207713-50-5-1893. PMID11034501.
Pillay, B.; Roth, G.; Oellermann, A. (1989). “Cultural characteristics and identification of marine nitrifying bacteria from a closed prawnculture system in Durban”. South African Journal of Marine Science. 8 (1): 333–343. doi:10.2989/02577618909504573.
Grundmann, GL; Neyra, M; Normand, P (2000). “High-resolution phylogenetic analysis of NO2--oxidizing Nitrobacter species using the rrs-rrl IGS sequence and rrl genes”. International Journal of Systematic and Evolutionary Microbiology. 50 (Pt 5): 1893–8. doi:10.1099/00207713-50-5-1893. PMID11034501.
D., Skerman, V. B.; Vicki., Mcgowan; Andrews., Sneath, Peter Henry; committee., International committee on systematic bacteriology. Judicial commission. Ad hoc (ngày 1 tháng 1 năm 1989). Approved lists of bacterial names. American society for microbiology. ISBN9781555810146. OCLC889445817.