Cita APA (7a ed.)

Luther, M., & Grimm, H. J. (2003). On christian liberty. Fortress Press.

Cita Chicago Style (17a ed.)

Luther, Martin, y Harold John Grimm. On Christian Liberty. Minneapolis: Fortress Press, 2003.

Cita MLA (9a ed.)

Luther, Martin, y Harold John Grimm. On Christian Liberty. Fortress Press, 2003.