Cita APA (7a ed.)

Angell, R. C., & Niebuhr, R. (1958). Free society & moral crisis. University of Michigan Press.

Cita Chicago Style (17a ed.)

Angell, Robert Cooley, y Reinhold Niebuhr. Free Society & Moral Crisis. Ann Arbor: University of Michigan Press, 1958.

Cita MLA (9a ed.)

Angell, Robert Cooley, y Reinhold Niebuhr. Free Society & Moral Crisis. University of Michigan Press, 1958.