Allen, D. (2015). Getting things done: The art of stress-free productivity.
Chicago Style (17th ed.) CitationAllen, David. Getting Things Done: The Art of Stress-free Productivity. 2015.
MLA引文Allen, David. Getting Things Done: The Art of Stress-free Productivity. 2015.
警告:這些引文格式不一定是100%准確.