Michael Tomasello 
New Psychology of Language [PDF ebook] 
Cognitive and Functional Approaches To Language Structure, Volume I

This book, which gathers in one place the theories of 10 leading cognitive and functional linguists, represents a new approach that may define the next era in the history of psychology: It promises to give psychologists a new appreciation of what this variety of linguistics can offer their study of language and communication. In addition, it provides cognitive-functional linguists new models for presenting their work to audiences outside the boundaries of traditional linguistics. Thus, it serves as an excellent text for courses in psycholinguistics, and appeal to students and researchers in cognitive science and functional linguistics.