Bergey, D., Krieg, N. R., & Holt, J. G. (1984). Bergey's manual of systematic bacteriology. Williams and Wilkins.

Bergey, D.H, Noel R. Krieg, and John G. Holt. Bergey's Manual of Systematic Bacteriology. Baltimore; London: Williams and Wilkins, 1984.

Bergey, D.H, et al. Bergey's Manual of Systematic Bacteriology. Williams and Wilkins, 1984.