Dyfyniad APA

Descartes, R., & Cress, D. A. (1980). Discourse on method and meditations on first philosophy (2nd ed.). Hackett Publishing.

Dyfyniad Arddull Chicago

Descartes, Rene, and Donald A. Cress. Discourse on Method and Meditations on First Philosophy. 2nd ed. Indiana: Hackett Publishing, 1980.

Dyfyniad MLA

Descartes, Rene, and Donald A. Cress. Discourse on Method and Meditations on First Philosophy. 2nd ed. Hackett Publishing, 1980.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.