Cita APA (7a ed.)

Gruchy, J. d. (1988). Dietrich Bonhoeffer: Witness to Jesus Christ. Collins.

Cita Chicago Style (17a ed.)

Gruchy, John de. Dietrich Bonhoeffer: Witness to Jesus Christ. [London]: Collins, 1988.

Cita MLA (9a ed.)

Gruchy, John de. Dietrich Bonhoeffer: Witness to Jesus Christ. Collins, 1988.