Below is a list of free downloadable Applied Linguistics books. You can browse the contents tables, download the PDF format files, and even print out chapters of interest
An Applied Linguistic Approach To Discourse Analysis,Unpublished Ph.D. thesis
by H.G. Widdowson, Department of Linguistics, University of Edinburgh, May 1973
http://www.oup.com/elt/catalogue/guidance_articles/discourse_analysis?cc=global
Conditions for Second Language Learning
by Bernard Spolsky
http://www.oup.com/elt/catalogue/guidance_articles/LoC_Conditions_Second_Lang_Learn?cc=global
Explorations in Applied Linguistics, 20 Chapters by H.G. Widdowson
This volume bridges the gap between the theoretical and practical aspects of communicative language teaching, and Professor Widdowson's clear and original treatment of the subject will appeal to both teachers and applied linguists.
http://www.oup.com/elt/catalogue/guidance_articles/LoC_Explorations?cc=global
Learning Purpose and Language Use
by H.G. Widdowson
http://www.oup.com/elt/catalogue/guidance_articles/LoC_Learn_Purp_Lang_Use?cc=global
Second Language Pedagogy
by Dr N S Prabhu
http://www.oup.com/elt/catalogue/guidance_articles/LoC_Second_language?cc=global
An Applied Linguistic Approach To Discourse Analysis,Unpublished Ph.D. thesis
by H.G. Widdowson, Department of Linguistics, University of Edinburgh, May 1973
http://www.oup.com/elt/catalogue/guidance_articles/discourse_analysis?cc=global
Conditions for Second Language Learning
by Bernard Spolsky
http://www.oup.com/elt/catalogue/guidance_articles/LoC_Conditions_Second_Lang_Learn?cc=global
Explorations in Applied Linguistics, 20 Chapters by H.G. Widdowson
This volume bridges the gap between the theoretical and practical aspects of communicative language teaching, and Professor Widdowson's clear and original treatment of the subject will appeal to both teachers and applied linguists.
http://www.oup.com/elt/catalogue/guidance_articles/LoC_Explorations?cc=global
Learning Purpose and Language Use
by H.G. Widdowson
http://www.oup.com/elt/catalogue/guidance_articles/LoC_Learn_Purp_Lang_Use?cc=global
Second Language Pedagogy
by Dr N S Prabhu
http://www.oup.com/elt/catalogue/guidance_articles/LoC_Second_language?cc=global