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 Edition CitationRoam, 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 Edition CitationRoam, 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.