Cita APA (7th ed.)

Ehring, D. (1997). Causation and persistence: A theory of causation. Oxford University Press.

Cita Chicago (17th ed.)

Ehring, Douglas. Causation and Persistence: A Theory of Causation. New York ; Oxford, [England]: Oxford University Press, 1997.

Cita MLA (9th ed.)

Ehring, Douglas. Causation and Persistence: A Theory of Causation. Oxford University Press, 1997.