The Video Game Theory Reader 2
Bernard Perron & Mark J. P. Wolf (edt)
老子道德经注
（魏）王弼注；楼宇烈校释
Player vs. Monster
Švelch, Jaroslav.
Zi Ben Zhu Yi Yu Jing Shen Fen Lie Qian G
Wei Zhi
Designing Virtual Worlds
Richard A. Bartle