Roam, D. (2012). The Back of the Napkin: Solving problems and selling ideas with pictures (Online-Ausg.). Marshall Cavendish.
Chicago Style (17th ed.) CitationRoam, Dan. The Back of the Napkin: Solving Problems and Selling Ideas with Pictures. Online-Ausg. Singapore: Marshall Cavendish, 2012.
MLA (9th ed.) CitationRoam, Dan. The Back of the Napkin: Solving Problems and Selling Ideas with Pictures. Online-Ausg. Marshall Cavendish, 2012.
Warning: These citations may not always be 100% accurate.