Vol. 2-4 by Erick Mombeek with David Wadman & Martin Pegg.
Title from cover.
section 1. Phase one July-August 1940
section 2. Phase two August-September 1940
section 3. Phase three September-October 1940
section 4. Phase four November 1940-June 1941.
Battle of Britain by Eric Mombeek. ISBN 1903223083. Published by Classic Publications in 2001. Publication and catalogue information, links to buy online and reader comments.