Garrity, G. M.; Holt, J. G. (2001). The Road Map to the Manual. In D.R. Boone, R.W. Castenholz and G.M. Garrity (editors), Bergey's Manual of Systematic Bacteriology, second edition, vol. 1 (The Archaea and the Deeply Branching and Phototrophic Bacteria), Springer, New York.
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Garrity, G. M.; Holt, J. G.
2001
The Road Map to the Manual. In D.R. Boone, R.W. Castenholz and G.M. Garrity (editors), Bergey's Manual of Systematic Bacteriology, second edition, vol. 1 (The Archaea and the Deeply Branching and Phototrophic Bacteria), Springer, New York.