Carl Bereiter & Marlene Scardamalia 
Psychology of Written Composition [PDF ebook] 

First Published in 1987. Part of a series on the psychology of education and instruction, this volume marks a highpoint in the development on writing from a cognitive perspective. It significantly expands the data base upon which our understanding of writing rests. the book presents an original theory, or at any rate, the beginnings of a theory of writing and the development of writing skills, emphasizing the control processes in writing.