APA (7th ed.) Citation

Bailey, J. M., Gilbert, D., & Bonhoeffer, D. (1969). The Steps of Bonhoeffer: A pictorial album. Macmillan.

Chicago Style (17th ed.) Citation

Bailey, J. M., Douglas Gilbert, and Dietrich Bonhoeffer. The Steps of Bonhoeffer: A Pictorial Album. New York ; London: Macmillan, 1969.

MLA (8th ed.) Citation

Bailey, J. M., et al. The Steps of Bonhoeffer: A Pictorial Album. Macmillan, 1969.