Felix, A., (1888). Zur Morphologie und Physiologie der Schwefelbacterien. In <i> Beiträge zur Morphologie und Physiologie der Bacterien. Heft I </i>, pp. 1-120. Edited by S. Winogradsky, Leipzig.
Bergey, D. H., Buchanan, R. E., Gibbons, N. E., (1974). Bergey's manual of determinative Bacteriology. 8th. EditionEdited by R. E. Buchanan, The Williams & Wilkins Co..

Perty, M., (1852). Zur Kenntnis kleinster Lebensformen. I-VIII. Jent and Reinert.
Imhoff, J. F., Süling, J., Petri, R. (1998). Phylogenetic relationships among the <i>Chromatiaceae</i>, their taxonomic reclassification and description of the new genera <i>Allochromatium</i>, <i>Halochromatium</i>, <i>Isochromatium</i>, <i>Marichromatium</i>, <i>Thiococcus</i>, <i>Thiohalocapsa</i> and <i>Thermochromatium</i>. <i> Int.J.Syst.Bacteriol. </i><b> 48 </b>: 1129-1143 .
Bergey, D. H., Buchanan, R. E., Gibbons, N. E., (1974). Bergey's manual of determinative Bacteriology. 8th. EditionEdited by R. E. Buchanan, The Williams & Wilkins Co..

Pfennig, N., Trüper, H. G. (1971). New nomenclatural combinations in the phototrophic sulfur bacteria. <i> Int.J.Syst.Bacteriol. </i><b> 21 </b>: 11-14 .
Felix, A., (1888). Zur Morphologie und Physiologie der Schwefelbacterien. In <i> Beiträge zur Morphologie und Physiologie der Bacterien. Heft I </i>, pp. 1-120. Edited by S. Winogradsky, Leipzig.
Bergey, D. H., Buchanan, R. E., Gibbons, N. E., (1974). Bergey's manual of determinative Bacteriology. 8th. EditionEdited by R. E. Buchanan, The Williams & Wilkins Co..

Felix, A., (1888). Zur Morphologie und Physiologie der Schwefelbacterien. In <i> Beiträge zur Morphologie und Physiologie der Bacterien. Heft I </i>, pp. 1-120. Edited by S. Winogradsky, Leipzig.
Bergey, D. H., Buchanan, R. E., Gibbons, N. E., (1974). Bergey's manual of determinative Bacteriology. 8th. EditionEdited by R. E. Buchanan, The Williams & Wilkins Co..

Imhoff, J. F., Süling, J., Petri, R. (1998). Phylogenetic relationships among the <i>Chromatiaceae</i>, their taxonomic reclassification and description of the new genera <i>Allochromatium</i>, <i>Halochromatium</i>, <i>Isochromatium</i>, <i>Marichromatium</i>, <i>Thiococcus</i>, <i>Thiohalocapsa</i> and <i>Thermochromatium</i>. <i> Int.J.Syst.Bacteriol. </i><b> 48 </b>: 1129-1143 .
(1991). Validation of the publication of new names and new combinations previously effectively published outside the IJSB. List No. 38. <i> Int.J.Syst.Bacteriol. </i><b> 41 </b>: 456-457 .