Cita APA (7a ed.)

Luther, M., Steck, K. G., & Gollwitzer, H. (1959). Luther. Fischer.

Cita Chicago Style (17a ed.)

Luther, Martin, Karl Gerhard Steck, y Helmut Gollwitzer. Luther. Frankfurt: Fischer, 1959.

Cita MLA (9a ed.)

Luther, Martin, et al. Luther. Fischer, 1959.