Heath, C., & Heath, D. (2010). Switch: How to change things when change is hard. Broadway Books.
Cita Chicago (17th ed.)Heath, Chip, i Dan Heath. Switch: How to Change Things When Change Is Hard. New York: Broadway Books, 2010.
Cita MLA (9th ed.)Heath, Chip, i Dan Heath. Switch: How to Change Things When Change Is Hard. Broadway Books, 2010.
Atenció: Aquestes cites poden no estar 100% correctes.