M. P. Ferla, J. C. Thrash, S. J. Giovannoni, W. M. Patrick: New rRNA gene-based phylogenies of the Alphaproteobacteria provide perspective on major groups, mitochondrial ancestry and phylogenetic instability. In: PLOS One. 8. Jahrgang, Nr.12, 2013, S.e83383, doi:10.1371/journal.pone.0083383, PMID 24349502, PMC 3859672 (freier Volltext) – (englisch).
Jang-Cheon Cho, Stephen J. Giovannoni: Parvularcula bermudensis gen. nov., sp. nov., a marine bacterium that forms a deep branch in the α-Proteobacteria. In: International Journal of Systematic and Evolutionary Microbiology Band 53, Nr. 4, Juli 2003, S. 1031–1036, ISSN1466-5026. doi:10.1099/ijs.0.02566-0. PMID 12892122.
M. P. Ferla, J. C. Thrash, S. J. Giovannoni, W. M. Patrick: New rRNA gene-based phylogenies of the Alphaproteobacteria provide perspective on major groups, mitochondrial ancestry and phylogenetic instability. In: PLOS One. 8. Jahrgang, Nr.12, 2013, S.e83383, doi:10.1371/journal.pone.0083383, PMID 24349502, PMC 3859672 (freier Volltext) – (englisch).
Sayers: Alphaproteobacteria. [National Center for Biotechnology Information] (NCBI) taxonomy database, abgerufen am 26. April 2019 (englisch).
Jang-Cheon Cho, Stephen J. Giovannoni: Parvularcula bermudensis gen. nov., sp. nov., a marine bacterium that forms a deep branch in the α-Proteobacteria. In: International Journal of Systematic and Evolutionary Microbiology Band 53, Nr. 4, Juli 2003, S. 1031–1036, ISSN1466-5026. doi:10.1099/ijs.0.02566-0. PMID 12892122.
Jang-Cheon Cho, Stephen J. Giovannoni: Parvularcula bermudensis gen. nov., sp. nov., a marine bacterium that forms a deep branch in the α-Proteobacteria. In: International Journal of Systematic and Evolutionary Microbiology Band 53, Nr. 4, Juli 2003, S. 1031–1036, ISSN1466-5026. doi:10.1099/ijs.0.02566-0. PMID 12892122.