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Bolnick، Daniel I.؛ Fitzpatrick، Benjamin M. (2007). "Sympatric Speciation: Models and Empirical Evidence". Annual Review of Ecology, Evolution, and Systematics. ج. 38: 459–87. DOI:10.1146/annurev.ecolsys.38.091206.095804.
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pubmed.ncbi.nlm.nih.gov
Fitzpatrick، B. M.؛ Fordyce، J. A.؛ Gavrilets، S. (2008). "What, if anything, is sympatric speciation?". Journal of Evolutionary Biology. ج. 21 ع. 6: 1452–9. DOI:10.1111/j.1420-9101.2008.01611.x. PMID:18823452.