APA (7th ed.) Citation

Keeling, S. V. (1968). Descartes / by S.V. Keeling (2nd ed.). O.U.P..

Chicago Style (17th ed.) Citation

Keeling, S. V. Descartes / by S.V. Keeling. 2nd ed. O.U.P., 1968.

MLA (9th ed.) Citation

Keeling, S. V. Descartes / by S.V. Keeling. 2nd ed. O.U.P., 1968.

Warning: These citations may not always be 100% accurate.