Cita APA (7a ed.)

Witherspoon, J., & Collins, V. L. (1912). Lectures on moral philosophy. Princeton university press.

Cita Chicago Style (17a ed.)

Witherspoon, John, y Varnum Lansing Collins. Lectures on Moral Philosophy. Princeton, N.J.: Princeton university press, 1912.

Cita MLA (8a ed.)

Witherspoon, John, y Varnum Lansing Collins. Lectures on Moral Philosophy. Princeton university press, 1912.