1.
How to derive "ought" from "is". Ithaca, N.Y.: Sage School of Philosophy, Cornell University; 1964.
How to derive "ought" from "is". Ithaca, N.Y. : Sage School of Philosophy, Cornell University, 2 mai 1964
Searle John Rogers. (1964). How to derive "ought" from "is". Sage School of Philosophy, Cornell University.
Style de citation MLA (8e éd.)Searle John Rogers. How to Derive "Ought" from "Is". Sage School of Philosophy, Cornell University, 1964.
Attention : ces citations peuvent ne pas être correctes à 100%.