APA način citiranja (7. izdanje)
Westphal, J. (1998). Philosophical propositions: An introduction to philosophy. Routledge.
Čikaški stil citiranja (17. izdanje)
Westphal, Jonathan. Philosophical Propositions: An Introduction to Philosophy. London ; New York: Routledge, 1998.
MLA način citiranja (9. izdanje)
Westphal, Jonathan. Philosophical Propositions: An Introduction to Philosophy. Routledge, 1998.
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