APA

Bourke V. J., . (1951). Ethics: a textbook in moral philosophy. New York: Macmillan.

Chicago

Bourke Vernon Joseph, . 1951. Ethics: a textbook in moral philosophy. New York: Macmillan.

Harvard

Bourke V. J., . (1951). Ethics: a textbook in moral philosophy. New York: Macmillan.

MLA

Bourke Vernon Joseph, . Ethics: a textbook in moral philosophy. New York: Macmillan. 1951.