Cita APA (7a ed.)

Roam, D. (2009). The back of the napkin: Solving problems and selling ideas with pictures. Marshall Cavendish.

Cita Chicago Style (17a ed.)

Roam, Dan. The Back of the Napkin: Solving Problems and Selling Ideas with Pictures. London: Marshall Cavendish, 2009.

Cita MLA (8a ed.)

Roam, Dan. The Back of the Napkin: Solving Problems and Selling Ideas with Pictures. Marshall Cavendish, 2009.