Bierhoff, K. Lightweight object specification with typestates. Software engineering notes..
芝加哥风格引文Bierhoff, Kevin. "Lightweight Object Specification with Typestates." Software Engineering Notes. .
MLA引文Bierhoff, Kevin. "Lightweight Object Specification with Typestates." Software Engineering Notes., .
警告：这些引文格式不一定是100％准确.