^Parker, Charles Thomas; Wigley, Sarah; Garrity, George M (27 April 2009). Parker, Charles Thomas; Garrity, George M (eds.). "Taxonomic Abstract for the genera". NamesforLife, LLC. doi:10.1601/tx.9747. {{cite journal}}: Cite journal requires |journal= (help)
^Krieg, Noel R.; Ludwig, Wolfgang; Whitman, William B.; Hedlund, Brian P.; Paster, Bruce J.; Staley, James T.; Ward, Naomi; Brown, Daniel (2011). Bergey's Manual of Systematic Bacteriology: Volume 4: The Bacteroidetes, Spirochaetes, Tenericutes (Mollicutes), Acidobacteria, Fibrobacteres, Fusobacteria, Dictyoglomi, Gemmatimonadetes, Lentisphaerae, Verrucomicrobia, Chlamydiae, and Planctomycetes. Springer Science & Business Media. ISBN9780387685724.