Warnock, M. (1966). Ethics since 1900 (2nd ed.). Oxford University Press.
Cita Chicago Style (17a ed.)Warnock, Mary. Ethics Since 1900. 2nd ed. London: Oxford University Press, 1966.
Cita MLA (9a ed.)Warnock, Mary. Ethics Since 1900. 2nd ed. Oxford University Press, 1966.
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