Cita APA (7a ed.)

Keeling, M. (1970). Morals in a free society (2nd (revised) ed.). SCM Press.

Cita Chicago Style (17a ed.)

Keeling, Michael. Morals in a Free Society. 2nd (revised) ed. London: SCM Press, 1970.

Cita MLA (9a ed.)

Keeling, Michael. Morals in a Free Society. 2nd (revised) ed. SCM Press, 1970.