^Garrity, George M. (2012). Bergey's manual of systematic bacteriology (2nd ed.). New York: Springer Science + Business Media. ISBN978-0-387-68233-4.
Further reading
Garrity, George M. (2012). Bergey's Manual of Systematic Bacteriology (2nd ed.). New York: Springer Science + Business Media. ISBN978-0-387-68233-4.
Nielsen, Halkjær; Daims, Holger; Lemmer, Hilde (2009). FISH handbook for biological wastewater treatment: Identification and quantification of microorganisms in activated sludge and biofilms by FISH (1st published. ed.). London: New York. ISBN978-1-84339-231-6.