Citation:
Crawford, Chris. The Art of Computer Game Design (1982). Vancouver: Washington State University Vancouver, 1997. <http://www.mindsim.com/MindSim/Corporate/artCGD.pdf>
Crawford, Chris. The Art of Computer Game Design (1982). Vancouver: Washington State University Vancouver, 1997. <http://www.mindsim.com/MindSim/Corporate/artCGD.pdf>