^editors, Don J. Brenner, Noel R. Krieg, James T. Staley (2005). Bergey's manual of systematic bacteriology (2nd ed.). New York: Springer. ISBN0-387-29298-5. {{cite book}}: |last1= has generic name (help)
^Bell, Elanor M., ed. (2012). Life at extremes : environments, organisms, and strategies for survival. Wallingford, Oxfordshire, UK: CAB International. ISBN978-1-84593-814-7.