Fitzpatrick, B. M.; Fordyce, J. A.; Gavrilets, S. (2008). "What, if anything, is sympatric speciation?". Journal of Evolutionary Biology. 21 (6): 1452–9. doi:10.1111/j.1420-9101.2008.01611.x. PMID18823452.
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ncbi.nlm.nih.gov
Fitzpatrick, B. M.; Fordyce, J. A.; Gavrilets, S. (2008). "What, if anything, is sympatric speciation?". Journal of Evolutionary Biology. 21 (6): 1452–9. doi:10.1111/j.1420-9101.2008.01611.x. PMID18823452.