Bergey’s Manual® of Systematic Bacteriology - Whitman, William B.; Bergey, David Hendricks; Garrity, George M.; Krieg, Noel R.; Parte, Aidan C.; Brown, Daniel; Hedlund, Brian P.; Ludwig, Wolfgang; Parte, Aidan; Paster, Bruce J.; Staley, James T.; Ward, Naomi (Springer New York, 2010)