APA-referens (7:e uppl.)
Roam, D. (2009). The back of the napkin: Solving problems and selling ideas with pictures. Marshall Cavendish.
Chicago-referens (17:e uppl.)
Roam, Dan. The Back of the Napkin: Solving Problems and Selling Ideas with Pictures. London: Marshall Cavendish, 2009.
MLA-referens (9:e uppl.)
Roam, Dan. The Back of the Napkin: Solving Problems and Selling Ideas with Pictures. Marshall Cavendish, 2009.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.