Language and languages - Variation.

Authority in language : investigating standard English by: Milroy, James; Milroy, Lesley (Language materials, printed)

Dialectology by: Chambers, J. K.; Trudgill, Peter (Language materials, printed)

How new languages emerge by: Lightfoot, David (Language materials, printed)

Language acquisition and learnability by: Bertolo, Stefano (Language materials, printed)

Understanding complex sentences : native speaker variation in syntactic competence by: Chipere, Ngoni (Language materials, printed)

Knowledge and learning in natural language by: Yang, Charles D. (Language materials, printed)

Style and sociolinguistic variation by: Eckert, Penelope; Rickford, John R. (Language materials, printed)