ebrary, Inc, & Shand, J. (2005). Central works of philosophy. Acumen.
芝加哥风格引文ebrary, Inc, 与 John Shand. Central Works of Philosophy. Chesham [U.K.]: Acumen, 2005.
MLA引文ebrary, Inc, 与 John Shand. Central Works of Philosophy. Acumen, 2005.
警告：这些引文格式不一定是100％准确.