Johansson, F. The medici effect: What elephants and epidemics can teach us about innovation. Harvard Business School Press.
Chicago-referens (17:e uppl.)Johansson, Frans. The Medici Effect: What Elephants and Epidemics Can Teach Us About Innovation. New York: Harvard Business School Press.
MLA-referens (9:e uppl.)Johansson, Frans. The Medici Effect: What Elephants and Epidemics Can Teach Us About Innovation. Harvard Business School Press.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.