Lefebvre, C., Comrie, B., & Cohen, H. (2013). New perspectives on the origins of language. John Benjamins Publishing Company.
Lua i Stíl Chicago (17ú heag.)Lefebvre, Claire, Bernard Comrie, agus Henri Cohen. New Perspectives on the Origins of Language. Amsterdam ; Philadelphia: John Benjamins Publishing Company, 2013.
Lua MLA (9ú heag.)Lefebvre, Claire, et al. New Perspectives on the Origins of Language. John Benjamins Publishing Company, 2013.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.