APA (7th ed.) Citation

Allen, D. (2015). Getting things done: How to achieve stress-free productivity (Revised and updated edition.). Piatkus Books.

Chicago Style (17th ed.) Citation

Allen, David. Getting Things Done: How to Achieve Stress-free Productivity. Revised and updated edition. London: Piatkus Books, 2015.

MLA (9th ed.) Citation

Allen, David. Getting Things Done: How to Achieve Stress-free Productivity. Revised and updated edition. Piatkus Books, 2015.

Warning: These citations may not always be 100% accurate.