Forrest, Peter. The Identity of Indiscernibles. Edward N. Zalta (编). The Stanford Encyclopedia of Philosophy. Fall 2008 [2012-04-12]. (原始内容存档于2019-03-18).
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Forrest, Peter. The Identity of Indiscernibles. Edward N. Zalta (编). The Stanford Encyclopedia of Philosophy. Fall 2008 [2012-04-12]. (原始内容存档于2019-03-18).