W.R. O’Donnell & LORETO Todd 
Variety in Contemporary English [PDF ebook] 

First Published in 1992. This is an exploration of the complex kinds of variation which occur in and between written and spoken English. Dialect, Pidgeon and Creole English are examined and the types of lingustics employed in advertising, literature and the classroom are discussed. The book is intended as an introduction to the study of English language. It is aimed primarily at college and university students, particularly thosed who are likely to find themselves teaching a language. It may also appeal to teachers, the general reader and sixth form pupils.