Allen, D. (2015). Getting things done: The art of stress-free productivity (Revised edition.). Penguin Books.
Cita Chicago Style (17a ed.)Allen, David. Getting Things Done: The Art of Stress-free Productivity. Revised edition. New York, New York: Penguin Books, 2015.
Cita MLA (8a ed.)Allen, David. Getting Things Done: The Art of Stress-free Productivity. Revised edition. Penguin Books, 2015.
Precaución: Estas citas no son 100% exactas.