Cita APA (7th ed.)

Warnock, M. (1960). Ethics since 1900. Oxford University Press.

Cita Chicago (17th ed.)

Warnock, Mary. Ethics Since 1900. London: Oxford University Press, 1960.

Cita MLA (9th ed.)

Warnock, Mary. Ethics Since 1900. Oxford University Press, 1960.