Cita APA (7th ed.)

Thomas, G. (1993). An introduction to ethics: Five central problems of moral judgement. G. Duckworth.

Cita Chicago (17th ed.)

Thomas, Geoffrey. An Introduction to Ethics: Five Central Problems of Moral Judgement. London: G. Duckworth, 1993.

Cita MLA (9th ed.)

Thomas, Geoffrey. An Introduction to Ethics: Five Central Problems of Moral Judgement. G. Duckworth, 1993.