Variability in invariant grammars: The Ottawa grammar resource on early variability in English.

Poplack, ShanaVan Herk, GerardHarvie, Dawn2023-05-232014-04-062002-01-012014-04-06https://repository.upenn.edu/handle/20.500.14332/45598Variability in invariant grammars: The Ottawa grammar resource on early variability in English.Early variability in English.Working Paper