"Bottlenecks and founder effects". Understanding Evolution. University of California, Berkeley. Archived from the original on 4 December 2015. Retrieved 14 December 2015.
Wright S (1955). "Classification of the factors of evolution". Cold Spring Harbor Symposia on Quantitative Biology. 20. Cold Spring Harbor Laboratory Press: 16–24D. doi:10.1101/SQB.1955.020.01.004. PMID13433551. Symposium: "Population Genetics: The Nature and Causes of Genetic Variability in Populations".
Stevenson 1991: Quote attributed to William B. Provine in The Origins of Theoretical Population Genetics (1971), p. 162; Chicago: University of Chicago Press. Stevenson JC (1991). Dictionary of Concepts in Physical Anthropology. Reference Sources for the Social Sciences and Humanities. Vol. 10. Westport, CT: Greenwood Press. ISBN0-313-24756-0. LCCN90022815. OCLC22732327.
Wright S (1955). "Classification of the factors of evolution". Cold Spring Harbor Symposia on Quantitative Biology. 20. Cold Spring Harbor Laboratory Press: 16–24D. doi:10.1101/SQB.1955.020.01.004. PMID13433551. Symposium: "Population Genetics: The Nature and Causes of Genetic Variability in Populations".
"Bottlenecks and founder effects". Understanding Evolution. University of California, Berkeley. Archived from the original on 4 December 2015. Retrieved 14 December 2015.
Stevenson 1991: Quote attributed to William B. Provine in The Origins of Theoretical Population Genetics (1971), p. 162; Chicago: University of Chicago Press. Stevenson JC (1991). Dictionary of Concepts in Physical Anthropology. Reference Sources for the Social Sciences and Humanities. Vol. 10. Westport, CT: Greenwood Press. ISBN0-313-24756-0. LCCN90022815. OCLC22732327.