The Prokaryotes Vol. 7: Proteobacteria: Delta and Epsilon Subclasses. Deeply Rooting Bacteria - Falkow, Stanley; Rosenberg, Eugene; Schleifer, Karl-Heinz.; Stackebrandt, Erko.; SpringerLink (Online service) (New York, NY : Springer New York : Imprint: Springer, 2006)
Proteobacteria. Delta Subclass. Epsilon Subclass -- Spirochaetes -- Chlorobiaceae -- Bacterioides and Cytophaga Group -- Chlamydia -- Planctomyces and Related Bacteria -- Thermus -- Chloroflexaceae and Related Bacteria -- Verrucomicrobium -- Thermotogales -- Aquificales -- Phylogenetically Unaffiliated Bacteria.
Keywords: Microbiology; Medical microbiology; Microbiology; Medical Microbiology