The back of the napkin : solving problems and selling ideas with pictures.

MLA

Roam, Dan. The Back of the Napkin : Solving Problems and Selling Ideas with Pictures. New York: Penguin, 2008.

APA

Roam, D. (2008). The back of the napkin : solving problems and selling ideas with pictures. New York: Penguin.

Chicago

Roam, Dan, The Back of the Napkin: Solving Problems and Selling Ideas with Pictures. New York: Penguin, 2008.