Stanford encyclopedia of philosophy: The Metaphysics Research Lab, Center for the Study of Language and Information, Stanford University. The Metaphysics Research Lab, Stanford Univ.
Chicago-referens (17:e uppl.)Stanford Encyclopedia of Philosophy: The Metaphysics Research Lab, Center for the Study of Language and Information, Stanford University. Stanford, Calif.: The Metaphysics Research Lab, Stanford Univ.
MLA-referens (8:e uppl.)Stanford Encyclopedia of Philosophy: The Metaphysics Research Lab, Center for the Study of Language and Information, Stanford University. The Metaphysics Research Lab, Stanford Univ.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.