APA

Prior A. N., . (1961). Logic and the basis of ethics. Oxford: At the Clarendon Press.

Chicago

Prior Arthur N, . 1961. Logic and the basis of ethics. Oxford: At the Clarendon Press.

Harvard

Prior A. N., . (1961). Logic and the basis of ethics. Oxford: At the Clarendon Press.

MLA

Prior Arthur N, . Logic and the basis of ethics. Oxford: At the Clarendon Press. 1961.