APA (7th ed.) Citation

Peterson, J. (2013). Playing at the world: A history of simulating wars, people and fantastic adventures, from chess to role-playing games (2. print.). Unreason Press.

Chicago Style (17th ed.) Citation

Peterson, Jon. Playing at the World: A History of Simulating Wars, People and Fantastic Adventures, from Chess to Role-playing Games. 2. print. San Diego, CA: Unreason Press, 2013.

MLA (9th ed.) Citation

Peterson, Jon. Playing at the World: A History of Simulating Wars, People and Fantastic Adventures, from Chess to Role-playing Games. 2. print. Unreason Press, 2013.