Williamson, T. (2017). Counterpossibles in semantics and metaphysics. University of Sassari.
芝加哥风格引文Williamson, T. Counterpossibles in Semantics and Metaphysics. University of Sassari, 2017.
MLA引文Williamson, T. Counterpossibles in Semantics and Metaphysics. University of Sassari, 2017.
警告：这些引文格式不一定是100％准确.