(2017). Happiness. Boston: Harvard Business Review Press.
Trích dẫn kiểu ChicagoHappiness. Boston: Harvard Business Review Press, 2017.
MLA引文Happiness. Boston: Harvard Business Review Press, 2017.
警告：這些引文格式不一定是100％准確.
APA引文
(2017). Happiness. Boston: Harvard Business Review Press.
Trích dẫn kiểu ChicagoHappiness. Boston: Harvard Business Review Press, 2017.
MLA引文Happiness. Boston: Harvard Business Review Press, 2017.