Current taxonomy of the rhizobia
- This page provides the most up-to-date taxonomy on a group of bacteria known as rhizobia. This is important in a field where genus and species names have changed rapidly.
- http://www.rhizobia.co.nz/Rhizobia_Taxonomy.html

NCBI Taxonomy site for Bacteria
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- http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?name=Eubacteria

List of Bacterial Names with Standing in Nomenclature
- The List of Bacterial Names with Standing in Nomenclature includes, alphabetically and chronologically, the nomenclature of bacteria and the nomenclatural changes as cited in the Approved Lists of Bacterial Names, or published, or validly publ
- http://www.bacterio.cict.fr/