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Fuchs, Jérôme; Ericson, Per G.P.; Bonillo, Céline; Couloux, Arnaud; Pasquet, Eric (November 2015). "The complex phylogeography of the Indo-Malayan Alophoixus bulbuls with the description of a putative new ring species complex". Molecular Ecology. 24 (21): 5460–5474. doi:10.1111/mec.13337. PMID26224534. S2CID44672012.
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Patten, Michael A.; Pruett, Christin L. (March 2009). "The Song Sparrow, Melospiza melodia, as a ring species: Patterns of geographic variation, a revision of subspecies, and implications for speciation". Systematics and Biodiversity. 7 (1): 33–62. doi:10.1017/S1477200008002867. S2CID154943.
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Moritz, Craig; Schneider, Christopher J.; Wake, David B. (September 1992). "Evolutionary Relationships Within the Ensatina eschscholtzii Complex Confirm the Ring Species Interpretation". Systematic Biology. 41 (3): 273–291. doi:10.2307/2992567. JSTOR2992567.
Irwin, Darren E.; Irwin, Jessica H.; Price, Trevor D. (2001). "Ring species as bridges between microevolution and speciation". Genetica. 112/113: 223–243. doi:10.1023/A:1013319217703. PMID11838767. S2CID7108000.
Fuchs, Jérôme; Ericson, Per G.P.; Bonillo, Céline; Couloux, Arnaud; Pasquet, Eric (November 2015). "The complex phylogeography of the Indo-Malayan Alophoixus bulbuls with the description of a putative new ring species complex". Molecular Ecology. 24 (21): 5460–5474. doi:10.1111/mec.13337. PMID26224534. S2CID44672012.
Irwin, Darren E.; Irwin, Jessica H.; Price, Trevor D. (2001). "Ring species as bridges between microevolution and speciation". Genetica. 112/113: 223–243. doi:10.1023/A:1013319217703. PMID11838767. S2CID7108000.
Fuchs, Jérôme; Ericson, Per G.P.; Bonillo, Céline; Couloux, Arnaud; Pasquet, Eric (November 2015). "The complex phylogeography of the Indo-Malayan Alophoixus bulbuls with the description of a putative new ring species complex". Molecular Ecology. 24 (21): 5460–5474. doi:10.1111/mec.13337. PMID26224534. S2CID44672012.
Naidoo, Theshnie; Goodman, Steven M.; Schoeman, M. Corrie; Taylor, Peter J.; Lamb, Jennifer M. (1 January 2016). "Partial support for the classical ring species hypothesis in the Chaerephon pumilus species complex (Chiroptera: Molossidae) from southeastern Africa and western Indian Ocean islands". Mammalia. 80 (6). doi:10.1515/mammalia-2015-0062. S2CID89517662.
Moritz, C.; Schneider, C. J.; Wake, D. B. (1 September 1992). "Evolutionary Relationships Within the Ensatina Eschscholtzii Complex Confirm the Ring Species Interpretation". Systematic Biology. 41 (3): 273–291. doi:10.1093/sysbio/41.3.273. S2CID49267121.
Patten, Michael A.; Pruett, Christin L. (March 2009). "The Song Sparrow, Melospiza melodia, as a ring species: Patterns of geographic variation, a revision of subspecies, and implications for speciation". Systematics and Biodiversity. 7 (1): 33–62. doi:10.1017/S1477200008002867. S2CID154943.