^Vos, Paul; Garrity, George; Jones, Dorothy; Krieg, Noel R.; Ludwig, Wolfgang; Rainey, Fred A.; Schleifer, Karl-Heinz; Whitman, William B. (28 January 2011). Bergey's Manual of Systematic Bacteriology: Volume 3: The Firmicutes. Springer Science & Business Media. p. 300. ISBN978-0-387-68489-5.