Cita APA (7a ed.)

Lillie, W. (1964). An Introduction to Ethics (3.). University Paperbacks.

Cita Chicago Style (17a ed.)

Lillie, William. An Introduction to Ethics. 3. Londres, Inglaterra: University Paperbacks, 1964.

Cita MLA (9a ed.)

Lillie, William. An Introduction to Ethics. 3. University Paperbacks, 1964.