Cita APA (7th ed.)

Wiggins, D. (1998). Needs, values, truth: Essays in the philosophy of value (3rd ed.). Clarendon Press.

Cita Chicago (17th ed.)

Wiggins, David. Needs, Values, Truth: Essays in the Philosophy of Value. 3rd ed. Oxford, England: Clarendon Press, 1998.

Cita MLA (9th ed.)

Wiggins, David. Needs, Values, Truth: Essays in the Philosophy of Value. 3rd ed. Clarendon Press, 1998.