Cita APA (7a ed.)

Turnbull, G., & Broadie, A. (2005). The principles of moral and Christian philosophy: Volume 1, The principles of moral philosophy. Liberty Fund.

Cita Chicago Style (17a ed.)

Turnbull, George, y Alexander Broadie. The Principles of Moral and Christian Philosophy: Volume 1, The Principles of Moral Philosophy. Indianapolis: Liberty Fund, 2005.

Cita MLA (9a ed.)

Turnbull, George, y Alexander Broadie. The Principles of Moral and Christian Philosophy: Volume 1, The Principles of Moral Philosophy. Liberty Fund, 2005.