Cita APA (7a ed.)

Allen, D. (2001). Getting things done: The art of stress-free productivity. Viking.

Cita Chicago Style (17a ed.)

Allen, David. Getting Things Done: The Art of Stress-free Productivity. New York: Viking, 2001.

Cita MLA (9a ed.)

Allen, David. Getting Things Done: The Art of Stress-free Productivity. Viking, 2001.