Sawada H, Kuykendall LD, Young JM (2003). "Changing concepts in the systematics of bacterial nitrogen-fixing legume symbionts". J. Gen. Appl. Microbiol. 49 (3): 155–79. doi:10.2323/jgam.49.155. PMID12949698.
Amarger N, Macheret V, Laguerre G (1997). "Rhizobium gallicum sp. nov. and Rhizobium giardinii sp. nov., from Phaseolus vulgaris nodules". Int. J. Syst. Bacteriol. 47 (4): 996–1006. doi:10.1099/00207713-47-4-996. PMID9336898.
Diange, E. A.; Lee, S. S. (2013). "Rhizobium halotolerans sp. nov., Isolated from Chloroethylenes Contaminated Soil". Current Microbiology. 66 (6): 599–605. doi:10.1007/s00284-013-0313-x. PMID23377488.
Marek-Kozaczuk M, Leszcz A, Wielbo J, Wdowiak-Wróbel S, Skorupska A (2013). "Rhizobium pisi sv. trifolii K3.22 harboring nod genes of the Rhizobium leguminosarum sv. trifolii cluster". Syst. Appl. Microbiol. 36 (4): 252–8. doi:10.1016/j.syapm.2013.01.005. PMID23507586.
Kesari, V.; Ramesh, A. M.; Rangan, L. (2013). "Rhizobium pongamiae sp. nov. From Root Nodules of Pongamia pinnata". BioMed Research International. 2013: 1–9. doi:10.1155/2013/165198.
Xu, Lin; Zhang, Yong; Deng, Zheng Shan; Zhao, Liang; Wei, Xiu Li; Wei, Ge Hong (2013). "Rhizobium qilianshanense sp. nov., a novel species isolated from root nodule of *Oxytropis ochrocephala Bunge in China". Antonie van Leeuwenhoek. 103 (3): 559–565. doi:10.1007/s10482-012-9840-x.
Turdahon M, Osman G, Hamdun M, Yusuf K, Abdurehim Z, Abaydulla G, Abdukerim M, Fang C, Rahman E (2012). "Rhizobium tarimense sp. nov. isolated from soil in the ancient Khiyik river of Xinjiang, China". Int. J. Syst. Evol. Microbiol. 63 (Pt 7): 2424–9. doi:10.1099/ijs.0.042176-0. PMID23203621.
Fang Wang; En Tao Wang; Li Juan Wu; Xin Hua Sui; Ying Li Jr. & Wen Xin Chen (2011). "Rhizobium vallis sp. nov., isolated from nodules of three leguminous species". Int. J. Syst. Evol. Microbiol. 61 (11): 2582–2588. doi:10.1099/ijs.0.026484-0. PMID21131504.
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Sawada H, Kuykendall LD, Young JM (2003). "Changing concepts in the systematics of bacterial nitrogen-fixing legume symbionts". J. Gen. Appl. Microbiol. 49 (3): 155–79. doi:10.2323/jgam.49.155. PMID12949698.
Amarger N, Macheret V, Laguerre G (1997). "Rhizobium gallicum sp. nov. and Rhizobium giardinii sp. nov., from Phaseolus vulgaris nodules". Int. J. Syst. Bacteriol. 47 (4): 996–1006. doi:10.1099/00207713-47-4-996. PMID9336898.
Diange, E. A.; Lee, S. S. (2013). "Rhizobium halotolerans sp. nov., Isolated from Chloroethylenes Contaminated Soil". Current Microbiology. 66 (6): 599–605. doi:10.1007/s00284-013-0313-x. PMID23377488.
Marek-Kozaczuk M, Leszcz A, Wielbo J, Wdowiak-Wróbel S, Skorupska A (2013). "Rhizobium pisi sv. trifolii K3.22 harboring nod genes of the Rhizobium leguminosarum sv. trifolii cluster". Syst. Appl. Microbiol. 36 (4): 252–8. doi:10.1016/j.syapm.2013.01.005. PMID23507586.
Turdahon M, Osman G, Hamdun M, Yusuf K, Abdurehim Z, Abaydulla G, Abdukerim M, Fang C, Rahman E (2012). "Rhizobium tarimense sp. nov. isolated from soil in the ancient Khiyik river of Xinjiang, China". Int. J. Syst. Evol. Microbiol. 63 (Pt 7): 2424–9. doi:10.1099/ijs.0.042176-0. PMID23203621.
Fang Wang; En Tao Wang; Li Juan Wu; Xin Hua Sui; Ying Li Jr. & Wen Xin Chen (2011). "Rhizobium vallis sp. nov., isolated from nodules of three leguminous species". Int. J. Syst. Evol. Microbiol. 61 (11): 2582–2588. doi:10.1099/ijs.0.026484-0. PMID21131504.
NOTE: R. gallicum and R. mongolense are 99.2% identical in their rDNA and may be the same species. It has been proposed by Silva et al. that R. mongolense and R. yanglingense be reclassified as R. gallicum sv. orientale.