David Allen

year of pub­li­ca­ti­onISBNauthor(s)title
2002978-0-9820137-0-0David AllenGTD® System Guides
2008978-0-9820137-1-7David Allen - Author of Getting Things DGTD Weekly Review (3 CD Audio Set)
  ''978-0-9820137-2-4David Allen - Author of "GTD"GTD® Live - Audio Seminar (Ten CD set)