APA (7th ed.) Citation

Roam, D. (2009). Unfolding the napkin : the hands-on method for solving complex problems with simple pictures / Dan Roam: The hands-on method for solving complex problems with simple pictures. Portfolio.

Chicago Style (17th ed.) Citation

Roam, Dan. Unfolding the Napkin : The Hands-on Method for Solving Complex Problems with Simple Pictures / Dan Roam: The Hands-on Method for Solving Complex Problems with Simple Pictures. New York: Portfolio, 2009.

MLA (9th ed.) Citation

Roam, Dan. Unfolding the Napkin : The Hands-on Method for Solving Complex Problems with Simple Pictures / Dan Roam: The Hands-on Method for Solving Complex Problems with Simple Pictures. Portfolio, 2009.

Warning: These citations may not always be 100% accurate.