APA استشهاد

Wiilams, B. (1978). Descartes: The project of pure enquiry. Penguin Books.

استشهاد بنمط شيكاغو

Wiilams, Bernard. Descartes: The Project of Pure Enquiry. Harmondswoth: Penguin Books, 1978.

MLA استشهاد

Wiilams, Bernard. Descartes: The Project of Pure Enquiry. Penguin Books, 1978.