ed.-in-chief, George M. Garrity (2012). Bergey's manual of systematic bacteriology (2nd ed.). New York: Springer Science + Business Media. ISBN978-0-387-68233-4. {{cite book}}: |last1= has generic name (help)
Stanley Falkow, ed. (2006). Archaea, Bacteria : Firmicutes, Actinomycetes (3. ed.). New York, NY: Springer. ISBN0-387-25493-5.