Vermeulen, F. (2017). Breaking bad Habits: Defy Industry Norms and Reinvigorate your Business. Harvard Business Review Press.
Chicago-referens (17:e uppl.)Vermeulen, Freek. Breaking Bad Habits: Defy Industry Norms and Reinvigorate Your Business. Boston, Massachusetts: Harvard Business Review Press, 2017.
MLA-referens (9:e uppl.)Vermeulen, Freek. Breaking Bad Habits: Defy Industry Norms and Reinvigorate Your Business. Harvard Business Review Press, 2017.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.