Volume
De Vos, P., Garrity, G.M., Jones, D., Krieg, N.R., Ludwig, W., Rainey, F.A., Schleifer, K.-H. & Whitman, W.B.
2009. Volume Three. The Firmicutes. In G.M. Garrity (ed.), Bergey's Manual of Systematic Bacteriology, Second Edition. Springer-Verlag, New York: [I]-XXVI, 1-1422.