Cita APA (7th ed.)

Keeling, S. V. (1968). Descartes (2nd ed.). Oxford University Press.

Cita Chicago (17th ed.)

Keeling, Stanley Victor. Descartes. 2nd ed. London: Oxford University Press, 1968.

Cita MLA (9th ed.)

Keeling, Stanley Victor. Descartes. 2nd ed. Oxford University Press, 1968.