APA (7th ed.) Citation

Salen, K., & Zimmerman, E. (2004). Rules of play : game design fundamentals / Katie Salen and Eric Zimmerman: Game design fundamentals. MIT.

Chicago Style (17th ed.) Citation

Salen, Katie, and Eric Zimmerman. Rules of Play : Game Design Fundamentals / Katie Salen and Eric Zimmerman: Game Design Fundamentals. Cambridge, Mass. ; London: MIT, 2004.

MLA (9th ed.) Citation

Salen, Katie, and Eric Zimmerman. Rules of Play : Game Design Fundamentals / Katie Salen and Eric Zimmerman: Game Design Fundamentals. MIT, 2004.

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