Allen, D. (2001). Getting things done : how to achieve stress-free productivity / David Allen: How to achieve stress-free productivity. Piatkus.
Chicago Style (17th ed.) CitationAllen, David. Getting Things Done : How to Achieve Stress-free Productivity / David Allen: How to Achieve Stress-free Productivity. London: Piatkus, 2001.
MLA (9th ed.) CitationAllen, David. Getting Things Done : How to Achieve Stress-free Productivity / David Allen: How to Achieve Stress-free Productivity. Piatkus, 2001.
Warning: These citations may not always be 100% accurate.