Stephens, W. O. (2007). Stoic ethics: Epictetus and happiness as freedom. Continuum.
芝加哥风格引文Stephens, William O. Stoic Ethics: Epictetus and Happiness as Freedom. London ; New York: Continuum, 2007.
MLA引文Stephens, William O. Stoic Ethics: Epictetus and Happiness as Freedom. Continuum, 2007.
警告：这些引文格式不一定是100％准确.