Bibliography
- Allen, David (2001). Getting Things Done: The Art of Stress-Free Productivity. New York: Penguin Putnam. ISBN 978-0-14-200028-1.
- Allen, David (2003). Ready for Anything: 52 Productivity Principles for Work and Life. New York: Viking Books. ISBN 978-0-14-303454-4.
- Allen, David (2008). Making It All Work: Winning at the Game of Work and Business of Life. New York: Viking Adult. ISBN 978-0-67-001995-3.
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