Cita APA (7a ed.)

Bonhoeffer, D., Horton Smith, N., & Bethge, E. (1963). Ethics. Chr. Kaiser.

Cita Chicago Style (17a ed.)

Bonhoeffer, Dietrich, Neville Horton Smith, y Eberhard Bethge. Ethics. Glasgow ; London: Chr. Kaiser, 1963.

Cita MLA (9a ed.)

Bonhoeffer, Dietrich, et al. Ethics. Chr. Kaiser, 1963.