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  10. ** ^  ** Andersen, Henning (2006). "Synchrony, diachrony, and evolution". In Nedergaard, Ole (ed.). _Competing Models of Linguistic Change : Evolution and Beyond_ . John Benjamins. pp. 59–90. [ ISBN ](/wiki/ISBN_\(identifier\) "ISBN \(identifier\)") [ 9789027293190  ](/wiki/Special:BookSources/9789027293190 "Special:BookSources/9789027293190") . 
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  13. ^  _**a** _ _**b** _ Croft, William (1995). "Autonomy and functionalist linguistics". _Language_ . **71** (3): 490–532. [ doi ](/wiki/Doi_\(identifier\) "Doi \(identifier\)") : [ 10.2307/416218 ](https://doi.org/10.2307%2F416218) . [ JSTOR ](/wiki/JSTOR_\(identifier\) "JSTOR \(identifier\)") [ 416218 ](https://www.jstor.org/stable/416218) . 
  14. ** ^  ** Croft, William (2006). "The relevance of an evolutionary model to historical linguistics". In Nedergaard Thomsen, Ole (ed.). _Competing Models of Linguistic Change: Evolution and Beyond_ . Current Issues in Linguistic Theory. Vol. 279. John Benjamins. pp. 91–132. [ doi ](/wiki/Doi_\(identifier\) "Doi \(identifier\)") : [ 10.1075/cilt.279.08cro ](https://doi.org/10.1075%2Fcilt.279.08cro) . [ ISBN ](/wiki/ISBN_\(identifier\) "ISBN \(identifier\)") [ 978-90-272-4794-0  ](/wiki/Special:BookSources/978-90-272-4794-0 "Special:BookSources/978-90-272-4794-0") . 
  15. ** ^  ** Croft, William (1995). "Autonomy and functionalist linguistics". _Language_ . **71** (3): 490–532. [ doi ](/wiki/Doi_\(identifier\) "Doi \(identifier\)") : [ 10.2307/416218 ](https://doi.org/10.2307%2F416218) . [ JSTOR ](/wiki/JSTOR_\(identifier\) "JSTOR \(identifier\)") [ 416218 ](https://www.jstor.org/stable/416218) . 
  16. ** ^  ** Croft, William (2015). "Functional approaches to grammar". In Wright, James (ed.). _International Encyclopedia of the Social & Behavioral Sciences _ . Elsevier. [ ISBN ](/wiki/ISBN_\(identifier\) "ISBN \(identifier\)") [ 9780080970875  ](/wiki/Special:Boo