Cita APA (7th ed.)

Gibbs, R. (2000). Why ethics?: Signs of responsibilities. Princeton University Press.

Cita Chicago (17th ed.)

Gibbs, Robert. Why Ethics?: Signs of Responsibilities. Princeton, N.J.: Princeton University Press, 2000.

Cita MLA (9th ed.)

Gibbs, Robert. Why Ethics?: Signs of Responsibilities. Princeton University Press, 2000.