Cita APA (7th ed.)

Plantinga, A. (1974). The nature of necessity. Oxford University Press.

Cita Chicago (17th ed.)

Plantinga, Alvin. The Nature of Necessity. New York, Estados Unidos: Oxford University Press, 1974.

Cita MLA (9th ed.)

Plantinga, Alvin. The Nature of Necessity. Oxford University Press, 1974.