Viggiano, A. (2008). Ethical Naturalism and Moral Twin Earth. Ethical theory and moral practice, 11(2), 213-224. doi:10.1007/s10677-007-9094-2
Cita Chicago Style (17a ed.)Viggiano, Andrea. "Ethical Naturalism and Moral Twin Earth." Ethical Theory and Moral Practice 11, no. 2 (2008): 213-224, https://doi.org/10.1007/s10677-007-9094-2.
Cita MLA (9a ed.)Viggiano, Andrea. "Ethical Naturalism and Moral Twin Earth." Ethical Theory and Moral Practice, vol. 11, no. 2, 2008, pp. 213-224, https://doi.org/10.1007/s10677-007-9094-2.
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